Diamonds are forever – but a setting is not.

Unmarked gemstones are among the biggest trends with jewelry collectors today. Often sold loose or simply set, these stones are endlessly customizable and can easily be reset when fashions change. Loose stones have even captured the attention of a new generation of jewelry buyers. Plus, because you’re buying the rock and not the brand name, unsigned gems offer tremendous value.

That’s why Sotheby’s is bringing you The Gem Drop, a monthly release of stunning jewels – featuring brilliant white diamonds, vibrant colored diamonds and rare gemstones – all priced between $20,000-300,000.