Green with Envy
Brilliant_Rock
- Joined
- Jun 25, 2007
- Messages
- 970
Is it common to get lower cut quality grades when you have a beautiful old stone (example is 1915 asscher) and have it certified by GIA and or EGL-USA with todays modern precision cut standards?
If you find a true vintage stone that is amazing... do you just sort of disregard the quality report of the certs? Then when you are trying to analyze the specifics of the cut style (is it an asscher, or a squarish emerald, etc.) what do you do when the pictures of the stones and measurements on the GIA cert and the EGL cert are a bit different... for the exact same stone?
Is it even fair to compare and scrutinize the patterns prices and availability of modern asschers to a 90+ yr old stone? Don''t have more specifics, but the asscher is GIA J VS1 with good symmetry, very good polish & has approx. 57% table and 68% depth. EGL rates stone H VVS2, which is not surprising for color difference.
How do you really compare to other stones when it seems practically impossible to get a good straight on photo of the windmill patterns? I saw Storm''s post from long ago showing how the smallest tilt of stone in picture can affect the windmill patterns.
For any stone cut before 1920, I thought I read somewhere that if not marked with number and Asscher symbol... then more likely just an old generic squarish EC? But these will still have mesmerizing windmills effects?
Thoughts?
If you find a true vintage stone that is amazing... do you just sort of disregard the quality report of the certs? Then when you are trying to analyze the specifics of the cut style (is it an asscher, or a squarish emerald, etc.) what do you do when the pictures of the stones and measurements on the GIA cert and the EGL cert are a bit different... for the exact same stone?
Is it even fair to compare and scrutinize the patterns prices and availability of modern asschers to a 90+ yr old stone? Don''t have more specifics, but the asscher is GIA J VS1 with good symmetry, very good polish & has approx. 57% table and 68% depth. EGL rates stone H VVS2, which is not surprising for color difference.
How do you really compare to other stones when it seems practically impossible to get a good straight on photo of the windmill patterns? I saw Storm''s post from long ago showing how the smallest tilt of stone in picture can affect the windmill patterns.
For any stone cut before 1920, I thought I read somewhere that if not marked with number and Asscher symbol... then more likely just an old generic squarish EC? But these will still have mesmerizing windmills effects?
Thoughts?