Description Natural Swiss Blue Topaz Marquise Ideal for crafting exquisite jewelry pieces such as rings, earrings, pendants, and more. Their marquise shape and vibrant hue make them a standout choice for both contemporary and classic designs. Moh’s Scale Hardness: 8 Specific Gravity: 3.4-3.6 Refractive Index: 1.606-1.638 Treatment: Heat, Irradiated Stability/Care: Excellent / Normal Origin: Brazil Average Weights: 8x4mm – 0.72cts
