Gemstone Chart |
Natural Diamond Diamond is the ultimate gemstone, having few weaknesses and many strengths. It is well known that Diamond is the hardest substance found in nature. Color: White, yellow, brown, black. Rarely, blue, red, or pink. Categories: precious stone Chemical Composition: C Crystal Group: Cubic Refractive Index: 2.417 Hardness: 10 Density: 3.52 Occurrence: Africa, Russia, Canada, Australia, India
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