资讯

Business Insider4 年
Why black opal is one of the most expensive gemstones in the world
Following is a transcript of the video. Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy ...
AOL8 年
World's most expensive opal literally glows in the dark - AOL
Meet the "Virgin Rainbow" – perhaps the finest and certainly the most expensive opal on record. It literally glows in the dark. In fact, as it gets darker around the opal, the opal appears ever ...
Aussie dad's incredibly rare $46,000 discovery inside stone: 'Best in the world'
The Gold Coast dad has now revealed the incredibly rare and lucrative discovery made inside one of the rocks — which recently ...
Work + Money on MSN11月
35 Most Valuable Gemstones, From Least to Most Expensive
"Mandarin garnet" specimens are the most in demand and the most expensive. Spessartine gem quality stones are rarely larger ...
Fox2Now St. Louis2 年
Australia at Risk of Loosing the most valuable Opal Collection in its ...
An extensive and valuable opal collection considered the premier opal collection in the 1980s is up for auction and could be lost for the people of Australia. BRISBANE, QUEENSLAND, AUSTRALIA, June ...