Quick question about incremental price jumps

[London]

I know that diamond prices jump by carats. So there is a price jump if you go from 1.99 to 2 carat or 2.99 to 3 carats and so on. My question is are there incremental price jumps within carats too? So for example does the price jump if you go from 3.25 to 3.50 or 3.50 to 3.75 and so on?

I hope my question makes sense

 

[Andelain]

I know that diamond prices jump by carats. So there is a price jump if you go from 1.99 to 2 carat or 2.99 to 3 carats and so on. My question is are there incremental price jumps within carats too? So for example does the price jump if you go from 3.25 to 3.50 or 3.50 to 3.75 and so on?

I hope my question makes sense

Yes, there are. For example, hitting the half carat mark is a healthy jump.

 

[London]

I know that diamond prices jump by carats. So there is a price jump if you go from 1.99 to 2 carat or 2.99 to 3 carats and so on. My question is are there incremental price jumps within carats too? So for example does the price jump if you go from 3.25 to 3.50 or 3.50 to 3.75 and so on?

I hope my question makes sense

Yes, there are. For example, hitting the half carat mark is a healthy jump.

Thank you. That's exactly what I was wondering

 

[OoohShiny]

It is for that reason that I've been avoiding 'round numbers' (e.g. 0.50, 0.60, 0.70) and the quarter carat markers (0.75) during my search!

 

[pyramid]

No. Price jumps are at the carat marks only.

 

[diamondseeker2006]

There are price jumps at various points under a carat. A .65 was a lot less than a .70, for example. I was recently looking at upgrading my studs, and there was a big difference between a .88 and a .90+. Certainly people look in the .40's to avoid the increase at .50.

But I believe I have read that is not the case once you get into 3.0-3.99 kind of ranges. I think there is not a significant jump within that range, just incremental.

I will also add that the 1.9+ stones I have seen and even .99's were not extremely discounted from the stones at full the carat mark. You have to go down a little further to see the significant price break.

 

[pyramid]

Yes, I was wrong. I believe that is what I read on here, but it was probably the larger stones they were discussing right enough.
(Which would therefore be the correct answer for the sizes posted from 3.25ct and up)

I believe there is always a shortage of ideal cut stones at 0.80 I read too. Is it because cutters try to make anything over 0.75 stretch to be a full carat, even if only a good cut or something.

 

[London]

Thank you for the responses. Very helpful as always

 

[Andelain]

Thank you for the responses. Very helpful as always

You're welcome.

BTW, there are jumps at points above a carat, just not so many increments as you get larger. You'll get a jump as you cross the 2.5 ct mark, but not so much of one as you cross 2.75.

 

[WinkHPD]

There are many incremental price jumps, and as has been spoken of here, it can be VERY difficult to get a great cut in a diamond of 0.65 - 0.69 cts because of the big jump that occurs at 0.70 cts.

I just looked at pricing of a diamond at 1.50cts that was going to be well over $15,000. That same diamond quality in a 1.47cts would be over $13,000, a $2,000 difference.

You might be VERY hard put to find a cutter willing to take that kind of loss to cut an AGS0 cut grade 1.47 when he could easily cut a steep deep GIA XXX and be over 1.50cts. The stone will not be as beautiful, not even close, but it will cost someone a LOT more money.

Wink's sad but true department

 

[diamondseeker2006]

Wink, she was specifically asking if there were big price jumps in the 3 carat range. Can you address that, please?

 

[Dancing Fire]

There are many incremental price jumps, and as has been spoken of here, it can be VERY difficult to get a great cut in a diamond of 0.65 - 0.69 cts because of the big jump that occurs at 0.70 cts.

I just looked at pricing of a diamond at 1.50cts that was going to be well over $15,000. That same diamond quality in a 1.47cts would be over $13,000, a $2,000 difference.

You might be VERY hard put to find a cutter willing to take that kind of loss to cut an AGS0 cut grade 1.47 when he could easily cut a steep deep GIA XXX and be over 1.50cts. The stone will not be as beautiful, not even close, but it will cost someone a LOT more money.

Wink's sad but true department

That's the main reason I'd try to shy away from those key # weight stones. i.e..if I were to buy a 1.5ct then I'd prefer a stone with a few points above 1.5ct.

 

[Dancing Fire]

Wink, she was specifically asking if there were big price jumps in the 3 carat range. Can you address that, please?

I am not Wink, but I'd guess that a 3.5ct stone will fetch 5% more than a 3.00-3.49ct stone.

 

[WinkHPD]

There will be an "unofficial" price jump there, but I would have to go do some research to know how much on average. On Monday I could call someone who regularly deals in the larger diamonds, which I do but rarely.

Wink

 

[London]

There will be an "unofficial" price jump there, but I would have to go do some research to know how much on average. On Monday I could call someone who regularly deals in the larger diamonds, which I do but rarely.

Wink

You are the best wink!

 

[GeorgeStevens]

It would seem this could be easily ascertained by querying the inventory of BN or another company likely to have a large enough listing.

 

[teobdl]

It would seem this could be easily ascertained by querying the inventory of BN or another company likely to have a large enough listing.

Great idea. Stratified by color and clarity, using high clarity only (because eye visible inclusions would significantly detract from price) there doesn't seem to be a significant bump. Small sample size. I won't bother doing a regression.

In fact, G VVS1 just BELOW 3.5 is between 20 and 40K more EXPENSIVE than those just hitting 3.5 ct. No immediately apparent rhyme or reason to why they're more expensive... the most expensive one definitely has the best but by HCA proportions, but otherwise there are clearly other factors impacting price much more than small carat increases at this weight.

 

[MollyMalone]

London, have you played with the Diamond Search function here on PS that has hundreds of thousands of stones "banked" in the database? Not an inventory of all the stones on the market, but still could be interesting-useful to you:
https://www.pricescope.com/diamond-search-results

 

[London]

Thank you everyone for the responses!

London, have you played with the Diamond Search function here on PS that has hundreds of thousands of stones "banked" in the database? Not an inventory of all the stones on the market, but still could be interesting-useful to you:
https://www.pricescope.com/diamond-search-results

Oh yes yes I've been playing with the diamond search a lot But I'm having a hard time answering my own question because of all the variables involved in pricing a diamond... so I figured I'd get some thoughts on it here

 

[Andelain]

It would seem this could be easily ascertained by querying the inventory of BN or another company likely to have a large enough listing.

Great idea. Stratified by color and clarity, using high clarity only (because eye visible inclusions would significantly detract from price) there doesn't seem to be a significant bump. Small sample size. I won't bother doing a regression.

In fact, G VVS1 just BELOW 3.5 is between 20 and 40K more EXPENSIVE than those just hitting 3.5 ct. No immediately apparent rhyme or reason to why they're more expensive... the most expensive one definitely has the best but by HCA proportions, but otherwise there are clearly other factors impacting price much more than small carat increases at this weight.

Weight of the rough. It takes a larger rough stone to get the same size in an ideal cut stone. The ones that made the increment are usually steed/deep, and hide extra weight in the girdle.