This is a beautiful single strand pearl necklace with platinum diamond clasp. The smallest pearl is 4mm and the biggest is 7mm. The clasp is set with approximately 0.75ct old mine cut diamond in the center accentuated by approximately 0.70ct of round and baguette cut diamonds. The color of the diamonds is I-J and the clarity is VS1. The length of this necklace is 20 1/4 inches.