From Brooke's Palomino Collection, one of a kind 18k Gold Australian Opal Carved Horse Necklace with Sparkling Pink Diamond noseband and White Diamond Horseshoe Detailing. 18K Gold Georgian Style Bezel Aquamarine Necklace with White Diamond Halo. - Metal: 18K yellow gold - Center Stone: Australian Opal, 11.80 ct - Accent Stones: Diamond Pave 0.12 ct, Pink Princess cut Diamonds, 0.10 ct - Setting Measurements: 35 mm × 27 mm - Chain: 18-20” 1.7mm round trace chain - Design: Georgian-style bezel setting - Necklace type: One of a kind