Product Details + Impressive Peruvian opal necklace.ID#: NEC082Peruvian Opals: Fifty-three (53) very large fully drilled and polished roundelle shaped stones. Colors ranging from brown to terra cotta and blue to turquoise (earth tones). Beads are approximately 20mm in diameter.Clasp: Large sterling silver spring ring Length: 24" Weight: 253.1g