Black opal is one of the rarest gemstones in the ... And the price of larger stones has risen by as much as 25 times. In 2000, jewelry company Le Vian capitalized on the underappreciated naturally ...
A ring with an 8.80ct black Australian opal, courtesy of Kreis jewellery. GemGenève exhibitions are a must-see each edition and this one was one of the most spectacular. Curated by Gemgenève ...