Opal View Sterling Silver Created Opal Seahorse Pendant Necklace, 18" An "Opal View" piece! 925 Sterling Silver and Lab-Created Opal, a Stunning Combination. Rhodium Plated, Promising a Long Lasting Shine, as well as a Beautiful Finish. 18" Sterling Silver Chain Included and comes in a beautiful, complimentary jewelry box! Comes with a Certificate of Authentication for Your Convenience.