- Joined
- Dec 6, 2014
- Messages
- 2,124
Edit -
Re. Brightness scale, I've seen B1-B5 with B5 being brightest, B1-B7 with B1 being brightest, B1-B7 with B7 being brightest... Last I saw the Opal Association of Australia recommended using words like SUBDUED and VIVID because the numbers were confusing everyone. For me as long as the vendor explains what their scale is, I'm good with it.
Disclaimer: Opal Association of Australia is reputable, but isn't exactly an unbiased non-profit - it was founded by a vendor (Seda actually). There is no universally-accepted opal evaluation authority. But the opal situation is still miles ahead of the pearl industry so... I temper my complaints.
As an Aussie Opal vendor, I have to say that @yssie has hit the proverbial nail on the head here. This is one of the things that has been most troubling for Aussie Opal Vendors when clients come to us expecting their Opal to have the same kind of certification as a Diamond or even a Sapphire.
@yssie has seen what has happened with Aussie Opals some from of the most reputable vendors when sent to some of the most reputable gem labs. To say that blunders were made could not be understated more