Rare 300-carat diamond necklace with links to Marie Antoinette fetches €4.5m in Geneva auction
Composed of approximately 300 carats of old mine-cut diamonds, the historic piece was once worn during royal coronations and ...
Green Matters on MSN5mon
If Diamonds Aren’t That Rare, Why Do They Cost so Much? An Investigation
Despite their widespread popularity and cultural significance, it turns out this popular engagement gem isn't as rare as we ...
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Rare 300-carat diamond necklace with links to Marie Antoinette fetches €4.5m in Geneva auction
A remarkably rare 18th-century diamond necklace ... 300 carats and composed of around 500 old mine brilliant-cut diamonds, was showcased in Sotheby’s 'Royal and Noble' sale in Geneva.