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Topic: quartz
Definition:

  • colorless glass made of almost pure silica a hard glossy mineral consisting of silicon dioxide in crystal form
  • present in most rocks (especially sandstone and granite)
  • yellow sand is quartz with iron oxide impurities

    Related tag cloud:

  • crystals
  • amethyst
  • crystal
  • minerals
  • oscillators
  • clock
  • glass
  • gemstones
  • frequency
  • jewelry
  • calcite
  • gems
  • mineral
  • vcxo
  • fluorite
  • citrine
  • rockhound
  • rocks
  • stones
  • geology
  • lapidary
    • Resources:

    Apple Computer, Inc.
    Designs, develops, produces, markets and services microprocessor-based personal computers, related software and peripheral products. (Nasdaq: AAPL)
    http://www.apple.com/