This Extremely Rare 10-Carat Blue Diamond Could Fetch $20 Million at Auction
The extremely rare, 10-carat Mediterranean Blue diamond could fetch a whopping $20 million at Sotheby's High Jewelry auction ...
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10 Ways to Tell If a Diamond Is Real, According to Jewelers
For example, the UV test—a common at-home method—calls for you to place the diamond under a UV light. If the gemstone gives off a blue glow, it's thought to be real. However, Zhang points out ...
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How to Know if a Diamond is Real + 9 Ways to Avoid Getting Duped
the "diamond" doesn't have the proper light dispersion properties that real diamonds possess. About 30% of diamonds will glow blue under ultraviolet (UV) lights (such as black lights). On the ...