Castafiore is the leading digital platform for buying and selling pre-owned (recent), vintage (over 20 years old) and antique (post-1940s) jewelry. Castafiore offers 10,000 jewels in all categories: rings, necklaces, bracelets, earrings, clips and even ladies' watches.

The name, coined by founders Charlotte Rey and Anne Borde, is a nod to the extravagant diva from the Tintin albums, who was crazy about jewelry and wore it in a totally uninhibited and assumed way. While the name may make you smile, the service offered by Castafiore couldn't be more serious.

These two jewelry insiders form the ideal tandem, their profiles complementing each other perfectly.

Charlotte Rey and Anne Borde help individuals who have a thousand questions when it comes to selling their jewel(s). How much is it worth on the market? Is it solid gold or gold-plated? How do you identify the stones? And, after all, what if it came from a prestigious house?

With the jewel in hand, they determine the nature of the materials, the weight of the gold, the carats of the stones, etc. They also look for traces of wear and tear. They also look for a hallmark, the sign of a renowned jeweller.