- vintage Art Deco - tested 14k white gold - Ruby (emerald cut) - stone measures approx: 10mm x 8mm Carat weight approx: 3.79ct - size 6 1/2 - weighs 4.6 grams Formal Emerald Ring With Rectangular Stone, Hallmarked Rectangular Ruby Ring For Formal Occasions, Classic Rectangular Ruby Ring, Elegant Ruby Ring With Rectangular Polished Finish, Classic Square Cut Ruby Ring, Elegant Rectangular Ruby Ring With Polished Finish, Formal Ruby Ring With Rectangular Stone, Fine Jewelry Ruby Ring, Rectangular For Formal Occasions, Formal Rectangular Ruby Ring