18K Rose and White Gold Diamond Accent and London Blue Topaz and Cushion Cut Smoky Quartz Gemstone Dangle Drop 18" Penda. Celebrate any occasion with the beauty and allure of natural gemstones! This lovely pendant necklace is crafted from genuine 18k rose and white gold, a metal that will stay tarnish-free for years to come. The bail is prong-set with a 9x9mm round heat-treated London blue topaz under which is suspended a solitaire round diamond accent stone in a prong setting with an approximate G-H Color and SI1-SI2 Clarity. The icing on the cake that is this stunning necklace is the 20x15mm cushion-cut heat treated smoky quartz gemstone in a 4-prong setting. This elegant pendant suspends gracefully from an 18" contemporary rope chain that secures with a spring ring clasp.