ELECTRONIC GEMSTONE LIBRARY Visit also the following pages in GEMMOLOGY WORLD: The Gemstone Inclusion Library Gemmology World Quiz MEXICAN OPAL SAFARI GEM MINING IN SRI LANKA - An exciting trip to the gem mines of Elahera, Sri Lanka. GEMSTONE PRODUCTION IN THAILAND - A visit to Chantaburi, Thailand. SOUTH SEA PEARL PRODUCTION - A visit to a South Sea Pearl Farm. VISIT TO IDAR-OBERSTEIN - Europe's gem centre. THE SAPPHIRE MINES IN PAILIN , CAMBODIA. EMERALDS OF BRAZIL - Mining in the Nova Era. Visit to a topaz mine in Brazil click for RealVideo , 1.05 minute (2.3 Mb) or for Quicktime , 1.05 minute (3.5 Mb). Gemlab Books and Instruments Amethyst Aquamarine Citrine ... Tsavorite AMETHYST - a transparent purple variety of quartz,is one of the most popular of colour gems. The birthstone of February, it was once believed to prevent the wearer from getting drunk, and if the circle of the sun or moon was engraved thereon, it was believed to prevent death from poison. Available in shades from light to dark purple, it is relatively hard, fairly brilliant, and overall a good, versatile, wearable stone, available in good supply even in very large sizes (although large sizes with deep colour are now becoming scarce). Amethyst is probably one of the most beautiful stones available at a moderate price, although one must be careful because "fine" amethyst is being produced synthetically today. It frequently exhibits colour zoning (often looking like chevrons). Amethyst may fade from heat and strong sunshine.
AQUAMARINE | |
|
