Malachite, diamond and yellow gold bracelet, £1,800, dior.com Onyx, chalcedony and 18-carat gold vermeil stacking ring, £129, and earrings, £165, missoma.com ...

Similarly Monica Vinader's Odyssey Gemstone Chain Necklace, £178, also features an aquamarine or green onyx pendant on an 18k gold vermeil chain. The collection is now available online and in store.