Cover Passages necklace in white and rose gold set with black opals, Paraiba tourmalines and diamonds by Chaumet (Photo: Armin Zogbaum)

October’s birthstone, opal, casts a spell when set into constellation-like high jewellery. Usually rendered in teeny-tiny earrings, rings, and necklaces, Tatler Asia celebrates the bigger and bolder opal-set pieces from this diamond-drenched season.