Onyx has launched with seven key products spanning across hues of tranquil blue, comforting beige, harmonious green, timeless grey and charcoal black. Onyx also offers a range of curated sets with a ...

Earlier this month, it was announced that the Golconda Blue would hit the auction block at the Magnificent Jewels sale on 14 May at Christie’s in Geneva. The 23.24-carat fancy vivid blue diamond was ...