Examination of 23 tanzanites coated by an apparently new technique revealed that the smaller stones (4–5 mm) could be identified as coated based on a combination of the unusually intense color and ...
Tanzanite – The mineral zoisite, which includes the gem variety known as tanzanite, it is often heated at low temperatures to remove a brownish color component to produce a stronger purplish-blue ...
Sovereign Gems is the newest gemstone wholesaler in Australia with a thirst to provide the jewellery trade of Australia with quality coloured stones and excellent service. Sovereign was born out of ...
(PRESS RELEASE) DALLAS — The American Gem Trade Association (AGTA) announced the winners of the 2024 AGTA Spectrum & Cutting Edge Awards. This year is extra special because it marks 40 years of ...