Wednesday, January 28, 2009

precious gems


A gemstone or gem, also called a precious or semi-precious stone, is a piece of attractive mineral, which — when cut and polished — is used to make jewelry or other adornments.[1] However certain rocks, (such as lapis-lazuli) and organic materials (such as amber or jet) are not minerals, but are still used for jewelry, and are therefore often considered to be gemstones as well. Most gemstones are hard, but some soft minerals are used in jewelry because of their lustre or other physical properties that have aesthetic value. Rarity is another characteristic that lends value to a gemstone.

1 comment:

  1. Simple and interesting details of the gemstone which you have shared within these post. Thank you very much. Kalpana Srikaanth astrologer | Best astrology consultant in Coimbatore

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