Fine Jewellery All Tom French jewellery is made in 18 carat gold or platinum. We select only the finest coloured gemstones such as Sapphires, Rubies and Emeralds. We also design jewellery using less well known stones, for instance Aquamarine, Tanzanite, Tourmaline and precious Topaz. Pearls We always have an impressive array of Pearl necklaces and stud earrings in stock. Our knowledge of the finest pearls is excellent and we can show you a large range of Japanese Akoya cultured pearls, very large Australian and Tahitian South sea Cultured pearls, in a variety of natural colours. We also stock Chinese freshwater pearl necklaces in natural colours.