The Core 12 Emerald necklace in 18 karat gold is part of the best selling Core collection, with a round white sapphire Kaleidoscope Shaker™ filled with emeralds. To preserve this piece, consult the care instructions. Description Pendant with 0.80ct of emeralds enclosed in a white sapphire Kaleidoscope Shaker™ in 18k gold. To preserve this piece, consult the care instructions. Materials & Measurements • 18 Karat Gold • 0.80ct Emeralds • Chain Length: 18" Adjustable 16" • Shaker Size: 12 mm Details • Handcrafted in New York City • Style # N537e • Closure: Lobster Clasp