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Appraising a cut corner triangle diamond https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=10&t=25330 |
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Author: | Melicia [ Thu Aug 08, 2019 8:30 am ] |
Post subject: | Appraising a cut corner triangle diamond |
Hello I am looking for some help in appraising a cut corner triangle diamond. sometimes known as a calf head diamond. Does anyone have a weight estimation formula and / or access to a price guide for this cut? Thanks so much in advance, Melicia |
Author: | Barbra Voltaire, FGG [ Thu Aug 08, 2019 6:34 pm ] |
Post subject: | Re: Appraising a cut corner triangle diamond |
Hi Melicia Gemstone Weight Estimation by Charles Carmona is a great reference for an appraiser to have on their shelf: Calf's Head Width x Height x Depth x Specific Gravity (3.52) x (0.00270-0.00290) Width=side to side points Height=top to bottom Leon Mege carries them: https://www.leonmege.com/side-stones Ava Diamond Corp: https://avadiamonds.net/side-stones/sid ... ond-pairs/ |
Author: | AlBalmer [ Thu Aug 08, 2019 7:02 pm ] |
Post subject: | Re: Appraising a cut corner triangle diamond |
Interesting. As far as I know,the only thing close to a formal taxonomy for gem shapes is the Long and Steele classification. In that, this would be type 16, cut-corner triangle, not type 26, calf's head, which is entirely different. If this was cut from a GemCad compatible design, you can establish the volume more accurately from the V/W3 ratio. |
Author: | Melicia [ Fri Aug 09, 2019 6:55 am ] |
Post subject: | Re: Appraising a cut corner triangle diamond |
Thank you! |
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