Exclusively Ours! Irene Neuwirth Diamond Collection's One-of-a-Kind necklace features a diamond, boulder opal and 18k white gold pendant on an 18k yellow gold oval-link chain. Chain accented with a pave diamond oval link, boulder opals framed by pavé and rose-cut white diamonds. 1.49 ct pavé white diamonds, 1.22 ct rose-cut white diamonds, boulder opal. 18k gold. 18" chain length, approximately; 3.25" pendant length x 31mm pendant width, approximately. Hook-and-eye style clasp with safety latch.