Sterling silver ring, Ag 925/1000. With genuine, natural gemstone - kavansite (very rare gemstone). Wonderful ring in modern, distinctive style. Kavansite stars shows us, that each of us has his own star - perfect and pure in the eyes of the Universe. Gemstone characteristics: Type: Natural gemstone - kavansite. Country of origin: USA. Carat weight: 36.55 ct. Cut: Druzy cut, dimensions 20x27 mm. Color: Blue. Clarity: Opaque. Luster: Good. Hardness: 3.0 - 4.0 Mohs. Specific gravity: 2.25 - 2.33. Refractive index: 1.542 - 1.551. Pattern dimensions ca. 29x22 mm, band width ca. 3.3 mm.