Sterling silver/14K yellow gold/cultured freshwater pearls/diamonds. Imported. Diamonds:04 ct. T.w. Pearls: 8mm. .51" X .47" Post back. Photo may have been enlarged and/or enhanced. All gemstone carat weights (ct. T.w.) are approximate; variance may be .05 carat. Almost all gemstones and black diamonds have been treated to enhance their beauty and require special care. Gemstone Treatment and Care.