Celestial, inspiring and eternally elegant. This Solid Gold Interstellar cultured Opal and Lab Grown Diamond Cluster Necklace catches the light - or moonlight - to add a handful of the night sky to your look. 14ct Solid Gold Gemstones: 5mm Opal, Lab Grown Diamonds Pendant is 8.5mm X 5.8mm Adjustable Chain Length: 16" with 2" extender, spring ring clasp