Physical Properties

    • Chemical Classification: Carbon 
    • Color
      • Most common: yellow or brown
      • Most liked and valuable: colorless 
      • Other valuable colors worth noting: vivid hues of red, orange, green, blue, pink, purple, violet, yellow 
        • These colors are rare and sell for high prices if the color is really outstanding 
    • Luster: adamantine→ the highest level of luster for a nonmetallic mineral
      • Luster = shine/glossiness
    • Diaphaneity: transparent, translucent, opaque 
    • Cleavage: perfect octahedral cleavage in four directions 
    • Mohs Hardiness: 10 → diamond is the hardest known mineral
      • It is hardest parallel to its octahedral planes and softest parallel to its cubic planes 
    • Diagnostic Properties: hardness, heat conductivity, crystal form, index of refraction, dispersion 
    • Crystal System: Isometric 

Gem Diamonds vs. Industrial Diamonds

    • Gem Diamonds vs. Industrial Diamonds 
      • Gem Diamonds
        • Sold for their beauty and quality 
        • Have a combination of color and clarity that makes them ideal for jewelry or investment use 
        • Rare and make up a minor portion of the worldwide diamonds because they have minimal impurities and defects
        • Specific gravity that is very close to 3.52
      • Industrial Diamonds
        • Used in cutting, grinding, drilling, and polishing procedures 
        • Hardness and heat conductivity characteristics are the qualities that are looked for and purchased here 
        • Often crushed to produce micron-sized abrasive powers 
        • *When Gemstone diamonds are cut too small, one can sell them into the industrial diamond industry