Metal Material: .925 Sterling Silver Average Weight: 3.16gm Length of Item:10.21 mm Width of Item:10.37 mm Thickness: 7.22 mm Cheryl M. Gift Satchel & Note Card Earring Closure:Post & Push Backs Rhodium-Plated Nickel-Free Stone Type: Cubic Zirconia (CZ) Stone Type: Opal - Blue Stone Creation Method: Lab-Created