Because this condition develops slowly, it is sometimes not even noticed. This film actually changes the optical properties of the mirrors that make up the facets of the diamond, allowing light rays to leak through them instead of being fully propagated internally and returned to the eye, and leaving them looking foggy and dull. This may simply be a case of the diamonds having developed a film of dirt and grime. Perfectly transparent diamonds, can start to look cloudy and lifeless over time. So it is still prudent to read the gemological report carefully and to otherwise verify that the diamond does not have any haziness.Ĭloudiness in a diamond is not necessarily a permanent condition. However, clarity grades are small ranges along a continuum, so it is possible for that VS2 to be on the borderline of Si1, a grade category that we have pointed out can contain diamonds with subtle to significant transparency deficits. So a VS2 diamond is much less likely to have a transparency issue, even with a cloud or twinning wisp grade setting inclusion. This grade represents a purity defined as having inclusions that are minor and require effort for an experienced grader to see at 10x. But what about those diamonds in the value sweet spot of VS1-VS2? Let’s focus on VS2.
And we have learned that this problem is essentially non-existent in the highest purity diamonds from Fl-VVS2. We have seen that under certain circumstances diamonds in Si and Imperfect clarity grades can have compromised transparency resulting in loss of performance due to transparency deficits.
0 kommentar(er)
