An absolutely outstanding collection of rare diamond and gem stone jewels are set to go on sale at Bonhams fine jewellery sale in London this month. The sale features stunning diamonds, elegant natural pearls and beautiful art deco pieces. Here’s a hand full of the extravagant jewels on offer; A pair of cushion cut diamond earrings – The two stunning 4.42 carat and 4.52 carat stones are elegantly set in a yellow gold eight claw setting and feature two smaller round brilliant cut diamond surmounts. The earrings have an estimated sale price of £30,000 to £35,000 when they hit the hammer at auction. A natural pearl necklace row – This stunning row of graduating natural, saltwater pearls featuring an old brilliant cut diamond clasp is expected to sell for £35,000 to £45,000 at the auction. A Sapphire and Diamond necklace and earring set – This spectacular necklace and earring set is set with a stunning arrangement of oval shaped blue, orange, pink and yellow Sapphires with a cluster of small round brilliant cut diamonds set around each one. The two pieces are expected to sell for £6,000 to £8,000 at auction. A striking diamond cluster ring – The diamond ring is composed of old brilliant cut diamonds and estimated to sell for £5,000 to £8,000.