Approximately 2.51 carats per piece (including the setting) Approximately 6 x 6 x 4~4.5 mm (excluding the bail, including the setting) Stone size: Approximately 6mm Bail opening size: Approximately 2mm (inner diameter) Setting: SILVER925, 18KGP finish These are single bail parts made of gem-quality London Blue Topaz from Brazil. They are jewelry-grade loose stones. The transparency and color are very beautiful. They are a deep blue color. Bail: 14KGF open type Chain is not included. The grid squares used in the image are 1cm x 1cm.