Colorful Sapphire Clavicle Necklace Pendant, 3x4mm Genuine Sapphire Pendant . This necklace is 40cm with about 5 cm for adjustment. The pendant contains natural sapphires measuring 3x4m and high quality cubic zirconia's. This necklace is 925 sterling silver and available in platinum plating (silver), gold or rose color. This item includes a velvet gift box an a certificate of authenticity with purchase. Please allow up to 15-20 days for processing and delivery of this item.