16 inches long This necklace is crafted in SOLID 10K WHITE GOLD with GENUINE EARTH MINED DIAMOND! Never worn photos are zoomed.Photo 4-5-6 shows exact mm size. Pendant top to bottom is 10.42mm Photos 8/9 shows 10k gold stamps on chain and pendant Photo 6 shows presidium gem tester showing diamond. I have a ton of 10k, 14k,, Kay jewelers, zales, vintage,, white gold. Rose gold, yellow gold, gemstones, wedding rings Art Deco fine jewelry, engagement/wedding ring. Solid gold diamonds, opals, Ruby's, emerald, gemstones listed currently here!! This item is in the category "Jewelry & Watches\Fine Jewelry\Necklaces & Pendants". The seller is "newmoonjewelry" and is located in this country: US. This item can be shipped worldwide.