Sotheby's Paris hosted a fine jewelry auction last month, and several sapphire and diamond rings—much like Kate Middleton's royal engagement ring—sold for staggering prices. A 10.68 carat cushion-cut ...
Sapphire is a corundum gemstone that has meaning, properties, and uses. Corundum gemstones are the crystalline form of aluminum oxide with traces of iron, titanium, vanadium, and chromium. Sapphire is ...
Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Jun 26, 2025, 02:26pm EDT Jun 27, 2025, 05:34am EDT A medieval ...
A STUNNING purple gem potentially worth nearly £300 million has been found in Sri Lanka. The ‘Purple Star Sapphire’ weighs an incredible 3,563 carats – and may be the biggest natural star sapphire ...
It sat unnoticed for two years before its true value was revealed A STUNNING purple gem potentially worth nearly £300 million has been found in Sri Lanka. The ‘Purple Star Sapphire’ weighs an ...
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