Jewelry Trends Sterling Silver Celtic Knot Round Pendant Necklace 18" Created Black Onyx Metal: .925 Sterling Silver; Finish: High polish; Adorned with an 18mm Black created Onyx Approximate Pendant dimensions: 27.0 mm wide x 37.0 mm long x 6.0 mm deep Box chain Necklace dimensions: 0.9 mm wide x 18 inches long; Clasp: Spring ring This beautiful affordable Sterling Silver Jewelry makes a great holiday or birthday gift for your family and friends. Complimentary gift box included