Diamonds : metal composed of carbon Stone C, colorless or different colors, transparent or Atm, specific gravity 3.52, higher than the cruelty of all available materials in nature. 2. zircon zircon chemical formula Zr (SiO4) prismatic crystals quad section, colorless transparent color when the net, gaining vestiges of it kinds of different colors shall be yellow or orange or red or green. Zircon enjoys high severely 7-8 and intensity of 4.7 and high immunity towards amino exception of hydrochloric acid, which dissolves the (Alchukl- 1). Zircon arises and is formed within the igneous and metamorphic rocks (Alasthalah), types of transparent and colored large crystals used jewels for decoration, while other vestiges types used in the manufacture of tools and utensils resistance to acids and high temperatures in the steel industry, and is a zircon only source for the extraction of hafnium Hf (secondary element enters the installed).
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