Colored gem beauties (lab-created)

[lovedogs]

Its a deep hole
The pale green corundum is pretty cool, I’ve seen it cut some nice stones.
That pale YAG is a new one to me - gotta put that on the wish list. There’s also tsav-like YAG floating around out there.

I’ve also seen #65 corundum turn out a nice purple-reddish.. also on my someday wish list.

Have you gone down the siamite / monosital / nanosital rabbit hole yet?

Ugh yes! One of the Chinese vendors suggested that the color I like might be nanosital, and sent these. It's such a huge hole of gorgeous colors!

 

[chroman]

Ugh yes! One of the Chinese vendors suggested that the color I like might be nanosital, and sent these. It's such a huge hole of gorgeous colors!

Hah! Wait until you see some of the color change versions. Funky stuff.

I got a piece of greenish-blue siamite for practice that I was sawing up over the weekend. Near color, but every camera i tried failed to get anywhere near an accurage color.

The RI is a bit lower than spinel/corundum, so its a little less interesting optically.

 

[lovedogs]

Hah! Wait until you see some of the color change versions. Funky stuff.

I got a piece of greenish-blue siamite for practice that I was sawing up over the weekend. Near color, but every camera i tried failed to get anywhere near an accurage color.

The RI is a bit lower than spinel/corundum, so its a little less interesting optically.

Since it seems like you know a bit about cutting stones, can you explain to me how to find a faceting diagram? A am trying to have a company cut me an antique elongated cushion , but they want to know what facet diagram to use. I obviously have no idea, and have been searching all over with no luck, likely bc I'm not searching with the right name. Plus, I have no idea how to translate a facet diagram into what it will look like IRL.

 

[SouthernGent]

Since it seems like you know a bit about cutting stones, can you explain to me how to find a faceting diagram? A am trying to have a company cut me an antique elongated cushion , but they want to know what facet diagram to use. I obviously have no idea, and have been searching all over with no luck, likely bc I'm not searching with the right name. Plus, I have no idea how to translate a facet diagram into what it will look like IRL.

Go here and look around. https://www.gemologyproject.com/wiki/index.php?title=Faceting_Designs

 

[lovedogs]

Go here and look around. https://www.gemologyproject.com/wiki/index.php?title=Faceting_Designs

I did, but can't find anything elongated and antique. Bah!

 

[bludiva]

Try this one...there are quite a few under antique cushion, some are more rectangular, some are more rounded

http://www.facetdiagrams.org/database/

 

[strawrose]

Try this one...there are quite a few under antique cushion, some are more rectangular, some are more rounded

http://www.facetdiagrams.org/database/

That is the fun with lab stones. You can pick what cut to use.

 

[lovedogs]

Try this one...there are quite a few under antique cushion, some are more rectangular, some are more rounded

http://www.facetdiagrams.org/database/

Yay thank you!!!! Only problem is that I still can't figure out which one will have this look:

 

[chroman]

Since it seems like you know a bit about cutting stones, can you explain to me how to find a faceting diagram?

Maybe some day I will - just starting off learning. That’s probably a whole thread for another time

Facetingdiagrams.org was mention which is a pretty good resource, though they dont have renders to help you visualize what the end result lools like. I’m no good at mentally translating them yet.

 

[elle_71125]

I'm falling down a glorious rabbit hole of lab colored stones while searching for the perfect blue. Look at these colors!

That mint green sapphire!
Oh, and #119 in the blue spinels...totally drool worthy.

 

[elle_71125]

Yay thank you!!!! Only problem is that I still can't figure out which one will have this look:

Hmm, maybe the 8.73 cushion or the 8.003 (Cullinan VIII).
Have you narrowed it down at all?

 

[Lucky_Rabbit]

Ugh yes! One of the Chinese vendors suggested that the color I like might be nanosital, and sent these. It's such a huge hole of gorgeous colors!

Whose your Chinese contact? the rough is a gorgeous color and the oval cut #2/3 are beautiful.

 

[lovedogs]

Whose your Chinese contact? the rough is a gorgeous color and the oval cut #2/3 are beautiful.

https://jjgems.m.en.alibaba.com?tracelog=alisupplier_sns_minisite

 

[lovedogs]

Hmm, maybe the 8.73 cushion or the 8.003 (Cullinan VIII).
Have you narrowed it down at all?

Haha sort of. I think it's one of these two. But honestly I have no idea.

 

[elle_71125]

I’ve never had to pick a cut before. This must be such a hard decision.
Both of your choices look great to me.

 

[lovedogs]

I’ve never had to pick a cut before. This must be such a hard decision.
Both of your choices look great to me.

Yeah it's a little cool, but also scary and makes me want to just order from Mona or someone who I know does this cut! But we will see, it's a relatively inexpensive gamble

 

[SouthernGent]

Haha sort of. I think it's one of these two. But honestly I have no idea.

I would say it's definitely not the second cut. See how that second cut's pavilion comes to a point? That yellow stone doesn't show that - it shows more what that first diagram shows. Very similar to my paraiba YAG.

 

[SouthernGent]

Yeah it's a little cool, but also scary and makes me want to just order from Mona or someone who I know does this cut! But we will see, it's a relatively inexpensive gamble

I approach stone cut selection like this: First, decide what shape you want (keeping in mind how you want to set/display/wear it). Then, determine which cuts are appropriate for the specific gemstone (for example, some cuts are designed for specific gemstones to best take advantage of their native shape (eg. tourmaline - rod-shaped, landing itself best to rectangular and emerald shapes) or refractive index (eg. blue zircon and the so-called "zircon cut").
Then, determine whether you want "all sparkly as hell!" or more subdued and elegant. There's some fabulous fancy cuts (concave comes to mind, as do those cuts with "stars" or "hearts" displayed in the pavilion) that personally look quite cheesy to me and remind me of something you'd find in a jewelry case at a truck stop.
Then, consider any limitations you may have as to how you want the stone set. For example, for the ring I recently had designed I wanted it to sit as low as possible on my finger and I therefore had to pick a cut with a shallow pavilion and give up a little bit of sparkle.

 

[lovedogs]

I would say it's definitely not the second cut. See how that second cut's pavilion comes to a point? That yellow stone doesn't show that - it shows more what that first diagram shows. Very similar to my paraiba YAG.

Aha,good point! Maybe it is the first one!

 

[SouthernGent]

Aha,good point! Maybe it is the first one!

I'll bet that if you had it cut to the first diagram you wouldn't be able to tell the difference even if it wasn't the exact cut of the yellow stone. I say go for it!

 

[lovedogs]

Whose your Chinese contact? the rough is a gorgeous color and the oval cut #2/3 are beautiful.

Haha they just told me the min order is 100 stones, or 1kg of rough. Dammit!

 

[sydneyatl]

Time to go all in on a pricescope group order

 

[PrecisionGem]

Not all, in fact many of these published cuts do not perform well. You need to also take note of the refractive index they were intended for, as many are designed around CZ which has a very high refractive index, and will not work with materials with lower RI’s.
It’s best to leave the design up to the cutter. An experienced cutter has cut enough stones, and worked with enough designs to know what is well suited for the material.

 

[SouthernGent]

Not all, in fact many of these published cuts do not perform well. You need to also take note of the refractive index they were intended for, as many are designed around CZ which has a very high refractive index, and will not work with materials with lower RI’s.
It’s best to leave the design up to the cutter. An experienced cutter has cut enough stones, and worked with enough designs to know what is well suited for the material.

"Not all" what? Whose post are you referring to?

 

[lovedogs]

"Not all" what? Whose post are you referring to?

The post where I posted all of the cuts I was considering. I think he was saying that not all of them will end up looking good with a given material (e..g they were written for a stone with specific R.I).

 

[SouthernGent]

Gotcha.

 

[voce]

Can anyone who is good at colors speak to this one vs msop's stone?

Yours looks a slightly lighter tone, although it may very well be the lighting. I think yours looks more appealing than msop's stone! Good luck with the facet!

 

[lovedogs]

First stone from Bryce is on it's way!!!

 

[Batgirl76]

Wow lovedogs!

 

[MeowMeow]

Omg!!! That looks amazing so far!!! I can't wait to see it once you get it!!