Sterling silver earrings, Ag 925/1000. Studs with friction back. Rhodium plated. With genuine, natural gemstone - blue topaz. Solemn earrings decorated by a topas, which competes even the blue color of the sky. Blue topaz is the birthstone of the month of December and the annual gemstone of the 4th and 19th wedding anniversary. Blue topaz is a symbol of love and affection. Gemstone characteristics: Type: Natural gemstone - blue topaz. Country of origin: Brazil. Carat weight: 2 x 0.80 ct = 1.60 ct. Square (princess) cut, 5x5 mm. Color: Sky blue. Clarity: VVS. Luster: Excellent. Hardness: 8 Mohs. Specific gravity: 3.4 - 3.5. Refractive index: 1.61 - 1.64. Topaz jewelry cleaning: The best way to clean topaz jewelry is by using mild detergent and warm water. Avoid cleaning with ultrasound or steam cleaners. Do not expose topazes to excessive heat or acids. Price per pair.