This 10k white gold round opal heart ring features a 4 mm genuine natural opal with a 0.09 ct total weight. Metal Type: white-gold Metal Purity: 10k Gem Type: Opal Total Gem Weight: 0.09 ct Setting: prongs Length: 0.38 in. Width: 0.38 in. Stone Shape: Round Stone Total Weight: 0.09 ct Gem Color: White Stone Creation Method: natural Stone Treatment Method: Not-treated Stone Length: 4 mm Packaging: FREE Gift Box with Bow