The details for this 1/2 carat, .50 carat smile bar necklace are listed below: Metal Quality: 18kt White Gold Pendant Style: Modern Diamond Number: 11 Diamond Shape: Round Brilliant Diamond Total Weight: .50 Carat Measurements of Pendant: 34 x 2.76 millimeters Chain Type: cable chain Chain Length: 18 inch Clasp: Spring Ring With Bolo Adjuster Chain Diameter: .61 millimeters Gram Weight: 2.21 Gams