This Diamond and Opal Necklace is crafted in 14k solid gold, and set with a dazzling diamond and stunning opal. With its delicate and eye-catching design, this timeless necklace is sure to make a beautiful addition to any jewelry collection. Diamond: Approximate total carat weight 0.003, 0.9 mm round GI SI1- I1 diamond Opal: 2.3 mm tear drop shaped genuine opal 14k solid gold 15" chain + 2" extender. Adjustable in 1 inch increments 15" - 17" Spring ring closure Natural color may vary in opal Avoid harsh chemicals and never fully submerge your opal in water This item has never been worn.