Articles

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  Madagascar

  23.02.2009
  Madagascar, or Republic of Madagascar (older name Malagasy Republic, French: Republique malgache), is an island nation in the Indian Ocean off the southeastern coast of Africa.

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  Value of gemstones

  23.02.2009
  There are no universally accepted grading systems for any gemstone other than white (colorless) diamond. Diamonds are graded using a system developed by the Gemological Institute of America (GIA) in the early 1950s. Historically all gemstones were graded using the naked eye. The GIA system included a major innovation, the introduction of 10x magnification as the standard for grading clarity. Other gemstones are still graded using the naked eye (assuming 20/20 vision).