ltem description from the seller
Material: Primary - Purity:925 Finish:Polished Stone Type_1:Onyx Stone Color_1:Black Stone Quantity_1:1 Band Width:2.20 to 7.20 mm (tapered) Stone Setting_1:Invisible Feature:Solid Head Height:3.2 mm Material: Primary:Sterling Silver Completeness:Complete (all stones included) Sizeable:No Stone Shape_1:Round Stone Size_1:11.50 x 11.50 mm Product Type:Jewelry Jewelry Type:Rings Sold By Unit:Each Texture:Textured Material: Primary - Color:White Ring Type:Gemstone Ring Top Length:12.99 mm Ring Top Width:12.99 mm Feature 2:Closed Back Stone Creation Method_1:Natural