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Buying Colored Diamond Online - My Brain Might Explode.Help?

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DashBadHorse

Rough_Rock
Joined
Oct 1, 2013
Messages
10
This is my first post as an official part of this community, but I've been watching and reading for quite some time (sounds a little creepy, I know). I've been shopping for an engagement ring for my girlfriend and I've figured out what I want for her: a yellowish-green fancy colored diamond, princess cut, around 1.2 carats in size.

I've not been able to find one of the proper coloring anywhere, until I found this site online @ lucentdiamonds.com

The website isn't much to look at, but I've been emailing and talking to the owner, Alix Grizenko, and he says that they have a natural 1.18 carat princess cut diamond that's been heat treated to make it the yellow-green color that I am looking for (I think this belongs in the natural diamond forum, because it's natural in origin, just not color, so forgive me if I'm mistaken).

The price is $6500 for the stone in question. I'd like to know if this price makes sense (I'm sure it does for him) and if anyone knows anything about buying this kind of stone, especially online. I've included some pictures below. The diamond, from what I'm told, changes colors depending on the lighting and looks either more yellow or more green as a consequence.

Any and all help would be greatly appreciated. Thanks in advance for your time and consideration :twirl:

2_121.jpg
3_99.jpg
5_43.jpg
7_25.jpg
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

A lot of people "watch" this site because it offers great advice, so no, it's not creepy.

I'd want to go with something that hasn't been tampered with. Here are some things I found. JA offers PS members an additional 1-5% discount on diamonds as well as a wire transfer discount, and they provide you with necessary images to help you make a well informed decision (aset image in this case).

If you like these, I'd put them on hold and request an aset image.

http://www.jamesallen.com/loose-diamonds/fancy-color/yellow/princess-cut/1.23-carat-si2-clarity-sku-255938 (ask about the clarity on this one)

http://www.jamesallen.com/loose-diamonds/fancy-color/yellow/princess-cut/1.59-carat-vs2-clarity-sku-231292 (love the size!)
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

Most of us prefer an untreated diamond so first off, I would like to verify that you understand what the treatment is, then decide if the treatment is acceptable to you. When it comes to coloured diamonds, it is never just "heat only".

HPHT (high pressure, high temperature)
This treatment is permanent and stable. The stones are exposed to extremely high temperatures and very high pressures. Some say the conditions are similar to those in which the stones were formed millions of years ago. The treatment is irreversible as it essentially artificially upgrades the diamond’s color. Depending on the stone, the change in color can be minor, or even quite dramatic.

Irradiation (followed by heat treatment)
This treatment is also permanent and stable. High-energy particles are exposed to the diamond and cause the diamond's crystal lattice to be physically changed. This treatment creates many ‘color centers’ throughout the stone, which therefore emulates a very strong appearance of specific colors in the diamonds. Many coloured diamonds are heated after irradiation treatment.

Does this diamond come with a lab report? Based on the colouration, I'm guessing the stone has been irradiated, then heated. Knowing the exact treatment the FCD has undergone is imperative to knowing whether the pricing is reasonable, a good deal or overpriced.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

First off, thanks for the suggestions. I'm trying to find something that comes closer to the greener side of the yellow-green dynamic. I too would vastly prefer a natural stone. If anyone knows where a comparable stone exists, I'm all ears...and eyes.

@ Chrono, doesn't have a lab certificate, although I might make that a stipulation of the sale. That way, I can see what GIA has to say about the item. According to the seller, it has only been heat treated.

Hope this info helps. Thanks bunches for the input so far. I'm so glad to have you all as amazing resources.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

And yeah, I don't know that heat only would create this color. Seller says heat only, so that's another reason I'm consulting the community. I'm ok with the artificial coloring if that's the only way I can get this color for a price under or around $8000. Thanks again!
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

DashBadHorse|1380635552|3530074 said:
This is my first post as an official part of this community, but I've been watching and reading for quite some time (sounds a little creepy, I know). I've been shopping for an engagement ring for my girlfriend and I've figured out what I want for her: a yellowish-green fancy colored diamond, princess cut, around 1.2 carats in size.
Click to expand...

Emphasis mine.


Are you sure that she wants a colored diamond as her engagement ring? It's a rare woman that would. Unless this is going to be a surprise, I would be 100% sure this is what she wants. If not, I would find out what his return policy is. You're spending a lot of money for an unusual stone that you may not be able to get back if your girlfriend doesn't like the stone.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

I should have be clearer with my wording of that phrase, but yes, I'm very confident she would want a colored diamond. She doesn't like traditional white diamonds and has stated her preference for colored on many different occasions. The yellow-green color is her favorite color of just about anything, so it seems like a perfect fit, but again, unsure of the price at $6500.

The return policy is 15 days after I receive the diamond, which I think is in line with many other places.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

Without knowing the treatment (all you have is the vendor's word) nor the colour grading, nobody can tell you whether that FCD is worth $6500. As far as I know, there is no "heat only" treatment for FCDs, it is either HPHT or irradiated w/heat, both of which brings the price down significantly and should not cost anywhere near $6500.

ETA
I just checked out Lucent Diamonds and it says right on the front page that their diamonds are HPHT treated, so there you go. It isn't "heat only" but High Pressure High Heat treated.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

DBH, I'm a collector of fancy colored diamonds with 20 purchases of fully natural FCDs.
I'm less-informed about treated FCDs.

As you know there are TWO things that can be natural or not, the origin of the material and the origin of the color.
Material can be mined from the ground, or grown in a lab.
Color can also be exactly as it came from the ground, or modified/treated in a lab.

Fully natural FCDs, with GIA reports to prove it, are much more expensive than FCDs with material or color that is not natural.

There is nothing wrong with synthetic diamonds or a mined diamond with treated color ... if the bride is educated about all this and that's what she wants.
Here at Pricescope we sometimes read about a bride who finds out, sometimes years later, that she was proposed to with a CZ instead of a real diamond.
Usually this ... uhm ... does not go over well. :angryfire:
It is seen as deception and even a betrayal.
There exists the assumption that engagement diamonds will be real and natural.
A diamond being natural means something especially when it serves as a symbol of marriage.

FCDs are not often given as engagement rings but an FCD being fully natural also means something ... as indicated in the price.

Your bride may not be happy if/when she finds out the color in her engagement ring is not natural.

That FCD you posted I'd guess to be a Fancy Vivid Yellow Green, or Fancy Vivid Yellowish Green.
The last hue listed is the dominant hue and Green is one of the most expensive.
You could look for a Fancy Vivid Green Yellow or Greenish Yellow and it would be much less expensive.

For example, this fully natural 1.11 ct Fancy Intense Yellow Green costs $44,500. http://www.fancydiamonds.net/view_diamonds/11391.htm#.UksgUBbA4qY
And Fancy Intense is less expensive than Fancy Vivid.
These astronomical prices are why nobody expects natural FCDs to be very large, unless you are Oprah.



I shy away from price comments on fully natural FCDs since there are so many things that can affect the value that are not fully covered even by GIA's grading standards.
With diamonds of treated color I'm pretty clueless but my gut says $6,500 is way high.

If you do decide to buy a fully natural FCD I recommend Leibish in the link above.
You can buy a great Yellow for that price.
They currently have 41 Yellows from 0.41 ct to 1.5 ct priced from $6000 to $7000.

screen_shot_2013-10-01_at_0.png
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

natural fancy colored diamonds in princess cut are uncommon... the most common shapes for fancy colored diamonds are radiants and cushions... so to find a natural princess cut in the size that you want (1.2 carats) and in the color you're looking for might take you a while to find...

as mentioned before green is one of the most expensive color in the natural fancy colored diamonds arena... i don't think you can find a 1 carat green diamond for the budget you're working with...

intensity of the color also plays into the price of the diamond...

if you're interested in natural diamond, with the budget you're working with, i'd say you might find a 1 carat fancy light greenish yellow princess cut... look for one with yellow fluo or green fluo to give that extra greenish color in some light... but then again this might take you years to find...

sorry i can't comment on the price of a treated one, i'm not familiar with treated diamonds... :)
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

You guys have all been so helpful thus far, certainly no need for apologies if you're not an expert on treated diamonds.

I think my girlfriend is absolutely fine with a color treated diamond, because she understands that otherwise, finding this color with an $8000 budget just isn't happening. I'm a high school teacher, they pay me in peanuts as it is. Some weeks, it's actual peanuts.

I do feel that the $6500 for a natural diamond that's been color treated is a bit high, I'm just trying to figure out how high. I obviously don't want to get ripped off, but I also know that even color treated diamonds of this color seem nigh impossible to find. I'd like to get a ring in the next few months, ideally.

As always, I love the input!
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

if you love the diamond you're looking at currently, and she does too, then i'd say go for it!!! :)

as far as price, ask them for a discount, or make them a counter offer... the worse they can do is say no... you'll never know unless you ask... :D
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

DashBadHorse|1380658331|3530303 said:
As always, I love the input!
Click to expand...



http://www.fancydiamonds.net/view_diamonds/11161.htm#.UkstDRbA4qY

In that case I'll offer this, knowing it's only a remote possibility ... a GIA-graded fully-natural VIVID FCD that fits the budget.
Fancy Vivid Green Yellow (Vivid is the most desirable, and expensive, of GIA's 9 Tone/Saturation grades).
Yellow listed last means GIA says it has more Yellow than Green, so it's much cheaper than if Green was mentioned last.
It looks very close to the border of Yellow Green.
Nature does not place every FCD in the middle of every GIA color grade.
They are distributed over the entire wide grade so some are near one border and others near the other border.

It is only 0.41 ct but perhaps putting it in a halo setting will up the impact.
I'd consider yellow melee diamonds in the halo, as the yellow will make the green in the center diamond seem even stronger by contrast.

Next it has VS1 grade from GIA, very rare and impressive.
It has Very Strong Green fluorescence which will make the stone look even more green under any light that has some ultraviolet component, like sunlight.

I realize you were looking for a 1 ct + ... but seen from the FCD universe this stone may be worth considering if your lady is open to it.

I think a $6,000 fully natural GIA FCD will hold it's value much better than a $6,000 treated one with no GIA report if you ever want to sell it some day.
But if resale value and treatment doesn't bother her or you, then you'll definitely get more size for the $$$ that way.

screen_shot_2013-10-01_at_1.png
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

Have you looked thru the Leibish/fancydiamonds.net site? They have a 15% off sale with many yellow diamond rings in your budget.
Maybe choose one of those and get a thin diamond wedding band with green diamonds. They do custom so you could inquire about the band. That could be stunning and you'll have a natural diamond that holds it's value.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

RockyRacoon|1380643139|3530138 said:
Personally, I would prefer a non-treated stone.

I would check out www.fancydiamonds.net

Here's a couple I quickly found, both under budget -

1.54ct, Fancy Brownish Greenish Yellow Diamond:
http://www.fancydiamonds.net/view_diamonds/1502.htm#.UkrwqT-F004

1.01ct, Fancy Intense Yellow Diamond:
http://www.fancydiamonds.net/view_diamonds/14405.htm#.UkrxHj-F004
Click to expand...

This fancy intense yellow diamond is a nice stone. it is going to be nearly impossible to in a greenish yellow stone at this price and size that is not irradiated or heat treated.

In MHO you are spending a nice amount of money on a special ring and it would be nice to have a truly beautiful natrual diamond.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

I agree that a natural yellow is a lovely option. I also think that you have a VERY healthy budget!

I know Diamonds by Lauren gets mixed reviews on here but may be worth a look. A couple of rings in budget:

http://www.diamondsbylauren.com/ind...yellow-cushion-si1-gia-shaped-like-a-tv-r3455

This one says yellow brown but there is a clear green hue in many lights:

http://www.diamondsbylauren.com/ind...y-brownish-yellow-gia-round-brilliant-diamond

Or, you could combine it with emeralds in the setting for a total stunner. I adore this ring and for a more quirky taste (like mine :)) it would make a lovely engagement ring. She could then stack it with an emerald eternity in due course.

http://www.diamondsbylauren.com/ind...-branded-dbl-modern-antique-diamond-gia-r5167
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

Thank you all so much! You're all proving an invaluable resource in what can otherwise be a daunting hunt for the right diamond. I guess the last area of concern I had about the stone I was considering (and one that, along with everything else said, might sway me to a natural stone) are the dimensions of the stone. I'm told the diamond I'm considering measures 5.26mm x 5.24mm x 4.72 mm deep and that it's a 1.18 carat stone.

But then a friend of mine (who knows precious little about precious stones) said that the dimensions seemed small for the alleged size. Now, I know that weight in diamonds is a little like weight in people and that 100lbs can look different on different people, is that accurate for diamonds? Are these good proportions, and if not, what do I need to know when looking for the dimensions vs. looking at the carat weight in the future?

You guys are awesome, thanks again :)
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

DashBadHorse|1380676636|3530473 said:
Thank you all so much! You're all proving an invaluable resource in what can otherwise be a daunting hunt for the right diamond. I guess the last area of concern I had about the stone I was considering (and one that, along with everything else said, might sway me to a natural stone) are the dimensions of the stone. I'm told the diamond I'm considering measures 5.26mm x 5.24mm x 4.72 mm deep and that it's a 1.18 carat stone.

But then a friend of mine (who knows precious little about precious stones) said that the dimensions seemed small for the alleged size. Now, I know that weight in diamonds is a little like weight in people and that 100lbs can look different on different people, is that accurate for diamonds? Are these good proportions, and if not, what do I need to know when looking for the dimensions vs. looking at the carat weight in the future?

You guys are awesome, thanks again :)
Click to expand...

Here's how to calculate the depth % of a diamond.
Divide the depth in mm by the smallest of the diameter or rectangle's measurements in mm, then multiply that by 100.
In this case: (4.72/5.24) x 100 = 90%

Your friend was right.
90% is very deep.
That means for the weight it will look quite small in a top view.

A well-cut princess will have a depth percentage around 74% plus or minus a few %.
90% is too deep.

Now this brings up another topic (can of worms).
Color diamonds are cut to maximize the color strength, and weight.
If they can cut it to get a stronger color grade it will be worth more money.
Cut for more final weight is more money.
Cut for good light performance ... no more money because Kenny is the only FCD shopper paying attention to light performance.

That is why light performance is not considered in FCDs.
I as a collector want what the market has made nearly-impossible to find, an FCD with both superb color and light performance.
This pisses off FCD sellers since I want what the industry does not provide, except by accident.
Occasionally a round diamond will come along with a shape that, when cutting for max color and weight, happens to end up also having proportions that have excellent light performance.

I have a few FCDs with great light performance, but a few with horrible light performance that I bought because the color itself is so rare and wonderful.

So, as if your FCD safari wasn't hard enough, I offer you an additional thing to seek and make your brain explode ... good light performance.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

Hi,

Congrats on your upcoming engagement. My understanding is the HPHT treatment was a discovery of General Electric. Initially it took a long time for a stone to turn into a desirable olor. I think t has sppded up the process and more colors are available. This was not intended to be a cheapie alternative to a "real diamond", but a less expensive route to fancy color diamonds.

The other option available is irradiated diamonds. They also were very expensive initially, several thousand dollars per ct, also due to being able to get a fancy colored diamond at a much lower price. These have fallen in price considerably. You will find blue, yellow-green and some plain green in irradiated. The color you are looking for can be found in an irradiated diamond. As soon as we see that color we know its irradiated. There was one being sold on Diamond Bistro recently or Loup.e troupe. The best place I know of to get that color is Jewelry Television www.JTV.com.. I think they may be too small for you.

Having said all that and having 2 irradiated blue diamonds, and several small "real ones, I do suggest you lean to '''''''''real ones, Leibish is a good place to look.


Annette
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

Kenny, I owe you for clarifying the whole "weight vs viable size" dynamic. It's just excruciating to add this dimension to the already staggering FCD equation. Am I correct in saying then that I'd be better off trying to get a 1 carat diamond with as close to a 74% depth percentage as possible since more of the diamond will be visible than would be on this 1.18 diamond with 90% depth?
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

yes... the stone you're looking at has the same spread as a 71% deep 0.9 ish carat princess cut diamond...
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

found a natural light green princess you might want to consider instead of the radiated one you're looking at...

http://www.exceldiamonds.com/Fancy-Diamonds-93/GIA-Graded-Princess-Fancy-Green-Diamond-0-99-Carat-228592.html

i'd contact barry / judah if i were you at exceldiamonds... ask them to take more photos... especially ones with a fancy light yellow diamond to compare the intensity of the color... so you know where it is in the "light green" spectrum...
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

DashBadHorse|1380739760|3530884 said:
Kenny, I owe you for clarifying the whole "weight vs viable size" dynamic. It's just excruciating to add this dimension to the already staggering FCD equation. Am I correct in saying then that I'd be better off trying to get a 1 carat diamond with as close to a 74% depth percentage as possible since more of the diamond will be visible than would be on this 1.18 diamond with 90% depth?
Click to expand...

Yes and no.
Consider the side view.
There could be three princesses, all with identical depth.
On these 3 diamonds the girdle on one could be placed too low, too high, or in just the right place.
Unfortunately FCD GIA reports do not report proportions like their reports for white diamonds ... another indication implying looking for good cut in an FCD is a noon.
Side pics from the vendor compared to side pics of well-cut white pricess cuts may help, but it's a rough tool at best since princesses have several rows of facets on the pavilion, all of which need to be at the best angles to deliver the best light performance.


Sorry your reaction to all this is: head exploding, excruciating, staggering etc.
The industry is set up to make as much money as possible not give you both good color and light performance.
For most rough light performance and the best color grade are usually financially mutually exclusive.

The majority of buyers of FCDs just buy without learning too much so perhaps ignorance is bliss for them.
Me, I'm stuck with a personality that digs deeper, trying to learn as much as possible to get the best FCD possible.
I'm constantly selling and upgrading the stones in my collection; it's a lifelong thing.

People vary and I'm sure many think I should not do what I do.
If it's too much hassle, don't do it.
Just buy whatever you first encounter and don't ask questions and dont' look back, and stop reading this diamond education forum.

The only diamond shape for which it's easy to identify good cut is the round diamond.
For all other shapes it's a hassle.
I'm happy to assist in this, but you have to decide whether it is worth it to spend an enormous amount of mental energy and time seeking something so rare you will likely have to settle for something only close to the goal.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

I can't get my work computer to click individual links, but it looks like there may be some nice options for complete rings on Mark Broumand's site http://www.markbroumand.com/fancy-color-engagement-rings/?page=3 (the princess in the bottom corner looked nice, I'm sorry I can't link it.) I have a MB ring and it's stunning. Very good workmanship.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

kenny|1380679136|3530508 said:
DashBadHorse|1380676636|3530473 said:
Thank you all so much! You're all proving an invaluable resource in what can otherwise be a daunting hunt for the right diamond. I guess the last area of concern I had about the stone I was considering (and one that, along with everything else said, might sway me to a natural stone) are the dimensions of the stone. I'm told the diamond I'm considering measures 5.26mm x 5.24mm x 4.72 mm deep and that it's a 1.18 carat stone.

But then a friend of mine (who knows precious little about precious stones) said that the dimensions seemed small for the alleged size. Now, I know that weight in diamonds is a little like weight in people and that 100lbs can look different on different people, is that accurate for diamonds? Are these good proportions, and if not, what do I need to know when looking for the dimensions vs. looking at the carat weight in the future?

You guys are awesome, thanks again :)
Click to expand...

Here's how to calculate the depth % of a diamond.
Divide the depth in mm by the smallest of the diameter or rectangle's measurements in mm, then multiply that by 100.
In this case: (4.72/5.24) x 100 = 90%

Your friend was right.
90% is very deep.
That means for the weight it will look quite small in a top view.

A well-cut princess will have a depth percentage around 74% plus or minus a few %.
90% is too deep.

Now this brings up another topic (can of worms).
Color diamonds are cut to maximize the color strength, and weight.
If they can cut it to get a stronger color grade it will be worth more money.
Cut for more final weight is more money.
Cut for good light performance ... no more money because Kenny is the only FCD shopper paying attention to light performance.

That is why light performance is not considered in FCDs.
I as a collector want what the market has made nearly-impossible to find, an FCD with both superb color and light performance.
This pisses off FCD sellers since I want what the industry does not provide, except by accident.
Occasionally a round diamond will come along with a shape that, when cutting for max color and weight, happens to end up also having proportions that have excellent light performance.

I have a few FCDs with great light performance, but a few with horrible light performance that I bought because the color itself is so rare and wonderful.

So, as if your FCD safari wasn't hard enough, I offer you an additional thing to seek and make your brain explode ... good light performance.
Click to expand...

Light performance is not an agreed upon standard, which means that light performance is a personal preference, as opposed to an agreed upon "gemological definition".
Many people besides Kenny who buy Fancy Colored Diamonds are concerned with how a diamond sparkles... which can also be termed "light performance". Many ( most) people that spend a lot of money on a diamond are concerned how it looks- at least that's my experience in dealing with many thousands of FCD buyers. That's just another way of saying they are concerned with light performance
Although there are indeed many FCD's cut that don't have such great sparkle- or light performance that might be agreed to be "good"- there are a fair number that do have excellent light performance.
Of course that's based on my opinion of light performance.
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

Light performance is not an agreed upon standard, which means that light performance is a personal preference, as opposed to an agreed upon "gemological definition

Then what is the HCA for? Or the GemEx analysis used for Leo diamonds and others? Somewhere there must be some kind of standard or else what good are these tools?
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

bcavitt|1380748711|3530985 said:
Light performance is not an agreed upon standard, which means that light performance is a personal preference, as opposed to an agreed upon "gemological definition

Then what is the HCA for? Or the GemEx analysis used for Leo diamonds and others? Somewhere there must be some kind of standard or else what good are these tools?
Click to expand...

I had always assumed light performance was quantitative. As diamond x returns more light than diamond y. :read: :confused:
 
Re: Buying Colored Diamond Online - My Brain Might Explode.H

bcavitt said:
Light performance is not an agreed upon standard, which means that light performance is a personal preference, as opposed to an agreed upon "gemological definition

Then what is the HCA for? Or the GemEx analysis used for Leo diamonds and others? Somewhere there must be some kind of standard or else what good are these tools?
Click to expand...

HCA is an excellent tool for identifying a certain type of light performance.
Is it the "best" light performance? That's clearly been a heated debate here on PS. GIA EX cut graded diamonds that score poorly on HCA are a good example.
A case could be made that GIA is too lax- but of course we can also make the case GIA has much greater trade acceptance than HCA

Devices like GexEx that show "Leo diamonds" to be superior are used as sales tools. Period.

Niel said:
bcavitt|1380748711|3530985 said:
Light performance is not an agreed upon standard, which means that light performance is a personal preference, as opposed to an agreed upon "gemological definition

Then what is the HCA for? Or the GemEx analysis used for Leo diamonds and others? Somewhere there must be some kind of standard or else what good are these tools?
Click to expand...

I had always assumed light performance was quantitative. As diamond x returns more light than diamond y. :read: :confused:
Click to expand...


Great point of misunderstanding Niel.
Let's all wear mirrors instead of diamonds if we want "maximum light return"

Any of the "light return measurements" are, at best, one dimensional.

By using this standard, we can agree that a Round Brilliant returns more white light than any other shape.
But does that make it better?
If we're looking in candle light, the light return of an OMB may be greater.
A radiant may have greater light return in direct sunlight.
 
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