Forbes contributors publish independent expert analyses and insights. Specialist in global markets, economics and alternative investments. Insuring diamond jewelry has traditionally been simple. The ...

GENEVA --The "Oppenheimer Blue" diamond sold Wednesday for more than 56.8 million Swiss francs ($58.2 million) including fees, setting a new record for the per-carat price for a diamond. Capping a ...

In an auction that ended moments ago, the 11.15-carat Williamson Pink Star diamond sold for approximately $57.7 million (including the auction premium) at Sotheby’s Hong Kong. Its per carat price of ...

The Pink Star diamond, a hefty 59.6-carat stone, is poised to be auctioned off by Sotheby’s Hong Kong on April 4. It’s the largest Internally Flawless, Fancy Vivid Pink diamond the Gemological ...

If you’re thinking of selling a diamond — or buying one and wondering if it will hold its value — you’re probably asking the right question: What is the diamond resale value and how can I get the best ...

Over the past decade the price of rare diamonds and gems has skyrocketed. Buyers have dropped tens of millions of dollars on jewels, and the competition is intensifying. It seems there's no limit to ...

The Pink Star diamond, a hefty 59.6-carat stone, is going to be auctioned off by Sotheby’s Hong Kong on April 4, 2017. It’s the largest internally flawless fancy vivid pink diamond the Gemological ...

The largest and finest Fancy Vivid Pink diamond ever offered at auction by Christie's sold for $50.375 million, setting a world record price per carat for a pink diamond and far exceeding the expected ...