joeq
Rough_Rock
- Joined
- Sep 30, 2003
- Messages
- 42
The difference between a H&A ideal with a great cut and an 8* is (in my opinion) 98% light return vs. 99% light return. The 'trick' of an 8* is (from what I can tell) they tweak the girdle and minor facets to get you "all red" on the Firescope (especially around the parameter of the stone). You'll have to decide for yourself if this minor tweakage is worth the 75% markup.
They will argue that 8*s look larger (the whiteness on the parameter of a non-8* is "dead area" so it "doesn't count"), and the color will appear up to 3 grades better.
3 grades better than a typical stone, I would definitely agree with.
3 grades better than the worst possible ideal cut, perhaps.
3 grades better than a great ideal cut, no way in hell.
Furthermore the Firescope only evaluates light return from 90 degrees perpendicular to the table. There is some evidence that the 8* tweakage actually increases light leakage from light coming in at other angles, as compared to an untweaked stone. The fact 8* looks the best under the Firescope is obvious: They invented the Firescope and then came up with the 8* cut to get the best look under the Firescope.
I compared my stone to a (much smaller) 8* under the Symmetriscope with Richard von Sternberg, creator of 8* in America. There *was* a difference under the scope, but even Richard agreed that there wasn't an $8,000 difference.
They will argue that 8*s look larger (the whiteness on the parameter of a non-8* is "dead area" so it "doesn't count"), and the color will appear up to 3 grades better.
3 grades better than a typical stone, I would definitely agree with.
3 grades better than the worst possible ideal cut, perhaps.
3 grades better than a great ideal cut, no way in hell.
Furthermore the Firescope only evaluates light return from 90 degrees perpendicular to the table. There is some evidence that the 8* tweakage actually increases light leakage from light coming in at other angles, as compared to an untweaked stone. The fact 8* looks the best under the Firescope is obvious: They invented the Firescope and then came up with the 8* cut to get the best look under the Firescope.
I compared my stone to a (much smaller) 8* under the Symmetriscope with Richard von Sternberg, creator of 8* in America. There *was* a difference under the scope, but even Richard agreed that there wasn't an $8,000 difference.