In the age of private sales and auction-house theatrics, the old metrics of diamond value—cut, clarity, carat and color—are only the opening act. True connoisseurs are chasing rarity, provenance ...

T he legendary diamond mines of Golconda are all gone now. The demand for their extraordinary stones—devoid of nitrogen, ...

We have a task for you: go to your jewelry box. If you’re lucky, perhaps you have a jewelry armoire. Whatever your jewelry ...