Stunning & Uniquely Designed 0.50 Carat Moissanite Diamond Solitaire is a 50 Point Diamond that Dances Beautifully. Metal setting is Sterling silver S925 with 18K White Gold vermil. The Chain on the Necklace is a standard O chain that is about 17.5 inches . Maybe a tad more. Includes the adjustable & removable addition of about 5 cm . You can adjust to your preference. GRA Certified and comes with GRA Moissanite Diamond report and the black warranty card. On the back of the Pendant is inscribed 50 in the setting . Passed Two Diamond tests . Moissanite & Diamond testers indicated that it was a diamond on the Diamond tester. The Moissanite/ DiamondTester indicated that it was a Moissanite.