Easy Close Clasp Silver Plated Necklace 20in. 8mm Nickel Free Hypoallergenic We ship the same or next day 🇺🇸 Priority Mail. South Sea Shell Pearls aren't made from plastic, glass, or inexpensive materials. South Sea Pearls are produced by using actual crushed sea shells. The same shells as the expensive South Sea Pearls. They're produced in a lab using South Sea oyster shells,using the same mollusks that the very expensive South Sea Pearls came from. Near the end of the process, high-powered sprayers and industrial ovens are used to coat the mother of pearl nucleus. Technology and quality control come together to create a beautiful Pearl.The're nearly flawless, big and round, beautiful and lustrous at an affordable price.The Mother of Pearl Nucleus adds value, and weight to your strand of pearls. South Sea pearls have the highest number of coatings , up to 20x. Some colors require more, some less. They will have a smooth surface, luster, size consistency, center drill holes, and gorgeous.