Natural pleochroic periwinkle blue tanzanite is surrounded by natural mined blue diamond accents set in rhodium over .925 sterling silver. Entire ring face is approximately 9.9mm. Primary gemstone information: Gemstone: Tanzanite Gemstone Species: Zoisite Count: 1 Carat Weight: 0.81 ctw Gemstone Shape: Oval Gemstone Dimensions: 7.50mm L x 5.50mm W Gemstone Setting: Prong Cut: Faceted Gemstone Color: Blue Gemstone Composition: Natural Enhancement: Heated Material Composition: Natural Origin Country: Tanzania, United Republic Of Accent gemstone information: Gemstone: Diamond Gemstone Species: Diamond Count: 22 Carat Weight: 0.09 ctw Gemstone Shape: Round Gemstone Dimensions: 1.00mm L x 1.00mm W Gemstone Setting: Pave Cut: Single Gemstone Color: Blue Gemstone Composition: Mined Enhancement: Irradiated (for color) Material Composition: Mined Origin Country: Australia Measures at size 6 on mandrel Polished band tapers to approximately 1.4mm Stamped BBJ 925 for rhodium over 92.5% sterling silver Last photo is brand/stock photo, not actual piece