nicholastanth
Rough_Rock
- Joined
- Jun 22, 2003
- Messages
- 3
1) I was told that the "crystal" of a diamond overrides the way the diamond is cut that is never mind the proportions; for instance the "Golconda" which is said to be of "purest" will display optimum scintillation - how true is this statement? Will the facets angles in this instance enhance or mar the "fire" give the leakage of light is great? Will a 10 times magnification be able to spot this variance?
2) I have seen many diamonds of similar proportions of identical colours. carat weight – clarity and with different Gem Lab reports and can spot differences in “fire”, “life”, etc – are there different standards in grading or could it be due to the quality of the crystal/rough. Which Gem Lab gives International accreditation? Why is it that a “Lazare” diamond is claimed to be “Ideal”. Does this mean that the quality of this crystal is not of importance?
3) Do fancy shaped diamonds inhibit the same factors as the rounds that is if one uses the Ideal scope or the Sarin machine, what sort of variances can one expect?
4) why are some diamonds “whiter” with stronger fluorescence for the same”grade”? can fluorescence be removed? If two identical diamonds (same colour, clarity, carat weight – one with strong blue; the other none) are tested using the Ideal scope and the Sarin machine. What can one expect assuming that both diamonds are cut in technically the same manner?
2) I have seen many diamonds of similar proportions of identical colours. carat weight – clarity and with different Gem Lab reports and can spot differences in “fire”, “life”, etc – are there different standards in grading or could it be due to the quality of the crystal/rough. Which Gem Lab gives International accreditation? Why is it that a “Lazare” diamond is claimed to be “Ideal”. Does this mean that the quality of this crystal is not of importance?
3) Do fancy shaped diamonds inhibit the same factors as the rounds that is if one uses the Ideal scope or the Sarin machine, what sort of variances can one expect?
4) why are some diamonds “whiter” with stronger fluorescence for the same”grade”? can fluorescence be removed? If two identical diamonds (same colour, clarity, carat weight – one with strong blue; the other none) are tested using the Ideal scope and the Sarin machine. What can one expect assuming that both diamonds are cut in technically the same manner?