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Precious Rocks and Minerals - A Guide

Explore various valuable rocks and minerals like sapphire, emerald, wulfenite, crocoite, platinum, gold, jade, diamond, and iron. Learn about their hardness, colors, transparency, and composition. Discover the beauty of these natural treasures.

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Precious Rocks and Minerals - A Guide

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  1. Rocks and Minerals ByDavid

  2. Sapphire • Hardnes: Moh´s scale hardness 9 • Color: pure blue, yellow or green. • Is the same as corundum • It’s composed of aluminum and oxigen. • It’s formed in an enviorment free of silicon

  3. Emerald • Hardness: 7.5-8 • Color: purple and green • Transparency: transparent to translucent

  4. Wulfenite • Hardness : 2.5 • Color : Yellow, orange and red • Transparency: transparent to translucent

  5. Crocoite Hardness: 2.5 Colors: orange or red Transparency: transparent to translucent

  6. Platinum • Hardness: 4.5 • Color: gray • Transparency: opaque

  7. Gold • Hardness: 3 • Color: golden • Transparency: opaque

  8. Jade • Color: green and more colors. • Hardness: 6.5-7 • Transparency: opaque

  9. Diamond • Hardness: 10 • Color: white to black, colorless, yellow, pink, red, blue or brown. • Transparency: transparent to opaque

  10. Iron • Hardness: 7.9 • Color: gray and black • Transparency: opaque

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