Turquoise Heart Opal Ring (Solid 9ct Gold)A colour so they named it opal ring. This stunning greeny blue Heart Shape Opal gemstone ring was handcrafted (yes which means cut by hand on a lapidary machine) out of a Lightning Ridge, NSW rough opal. Set on a thick Solid 9ct Gold ring band Solid and rare Australian opals. Handmade in Byron Bay, AUS Ring Size: Diameter: 17. 5mm (US size 7. 25 or AUS UK size O). Please refer to this particular sizing chart for all K L rings. Gemstone Size is Medium