Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. The four Cs — colour, cut, clarity and carat, a system invented by DeBeers in 1939 — guide the pricing of ...

Gemstones, including rubies, emeralds, and sapphires, can be sold for cash, much the same as diamonds and other jewelry. However, more often than not, those stones have very little resale value, ...

Dopamine dressing is one of the biggest trends this year and coloured gemstones are a sophisticated way to get in on the look. Emerald green and ruby red pieces were all over the recent catwalks, with ...