Material: Gold Approx. Length: 12.7 mm Approx. Width: 12.7 mm Post Length: .37 In Plating Type: N/A Surface Finish: Polished Primary Stone Shape: Round Primary Stone Size: 2.5 mm Post Diameter: .03 In Earring Type: Stud Earring Post Type: Friction Post Earring Back Type Included: Friction Backs Sold Separately Earring Closure: Friction Post and Back Primary Stone Type: Lab-Created Ruby Selling Unit of Measure: PR Total Diamond Carat Weight: 1/5 CTW