The sapphire teardrop measures overall 19mm by 12mm (including the loop). The glass in the middle of the teardrop measures 13mm by 10mm by 6mm. The chain is 14k gold filled and measures 2mm X 1.4mm. It is a flat cable design. The length of this particular necklace is approximately 16.5 inches. You are sure to stand out in this beautiful necklace!