Natural Diamonds

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Across
  1. 4. The color grades are D, E and F. F is considered a colorless diamond that is rare.
  2. 5. This refers to the diamond’s size by weight.
  3. 8. A well cut diamond is one that reflects the most light.
  4. 9. The crystal structure found for many metals has a unit cell of cubic geometry, with atoms located at each of the corners and the centers of all the cube faces
  5. 11. Latest diamond mining techniques that combines some principles of already mentioned techniques and uses vertical and horizontal drilling into the ocean floor and highly advanced underground vehicles to extract diamonds.
Down
  1. 1. Is basically mining of alluvial deposits (diamonds that end up in rivers).
  2. 2. Hardness ,Clarity ,Thermal Conductivity , Melting point and Lattice Density
  3. 3. Mining that involves drilling vertical tunnels which go couple of miles deep into the ground in order to extract valuable stone deposits.
  4. 6. Unbreakable or indestructible
  5. 7. This mining technique involves digging a large open pit in earth to extract diamonds from it.
  6. 10. Quality of being clear.