Black Freshwater Cultured Pearl Clip on Earrings 5-10 mm Most Appreciated Gift. Top rated Clip-on earring. Great for Any Occasions. See "Special Offers & Product Promotions" below for our current coupon offers. Free gift promotions require that the free gift item be added to your cart plus you must apply the coupon code during checkout. Any questions or request about cultured pearls quality, size, setting, metal type, Please do not hesitate to contact us! We are always be here and happy to assist you! All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free.