Item Specifications: Metal Type: Sterling Silver. Metal Stamp or Hallmark: .925 Metal Purity: 92.5% Sterling. Gemstone Creation Method: SimulatedFace Measurements From South To North: 7mm(0.27")Center Stone Measurements: 6mmX6mmApproximate Center Stone Carat Weight: 0.74 Carat Art Deco Heart, Ring Ruby, Stone Wedding, Bridal Ring, Ruby Ring, Three Stone, Bridal Rings, Metal Stamping, Wedding Bridal