18K White Gold Marquise 3 Section Marquise Diamond Flower Pendant Marquise Diamond Necklace, Flower Petal Diamond Necklace ,flower Blue Sapphire Marquise Flower Necklace September Birthstone Etsy Silver marquise necklace TigerLily Jewellery. This Marquise Flower Necklace Set features a 17" necklace with extension for adjustable wear, and elegant 0. 8" drop earrings. The post back and lobster clasp closures ensure secure and comfortable wear. Made with sparkling glass crystal rhinestones, this set will add a touch of sophistication to any outfit. Lead & Nickel Compliant Photo may have been enlarged and or enhanced.