New dials, rare stones, and traditional techniques redefine nine new watches in the Biver Automatique collection.

Ancient Persians believed the sky was blue because it reflected a massive sapphire beneath the Earth, giving the stone cosmic symbolism. Kings, priests, and rulers wore sapphires to signal wisdom, ...

Back in the day people were more relaxed about moving precious stones around the world. Consider, for example, the low-key arrangements for the famous Jonker diamond, which was shipped by ordinary ...

TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of online ...