If you're after an internally flawless diamond, a perfect sapphire from Sri Lanka or a forest-green emerald from Colombia ... world's most fabulous and important gemstones, including the ...

When admiring the richness of an emerald ... diamonds, grouped together in collections or, in the case of the largest and rarest stones, presented as single, statement gems in that most classic of ...

Graff has announced a new high jewellery collection to celebrate 50 years of designs using its signature Butterfly motif ...