Gemstones of Pakistan: Geology and Gemmology |
Contents
THEIR COMPOSITION PROPERTIES | 5 |
Specific gravity | 13 |
Gem cutting and polishing | 21 |
Copyright | |
13 other sections not shown
Common terms and phrases
absorption spectrum agate albite almandine amethyst Aquamarine aquamarine crystals bands beryl biotite birefringence blue Bulechi calcite Chitral chromium citrine cleavage cm long colour colourless contain Corporation of Pakistan Cretaceous crystalline Cut and polished dealers deposits diamond Dusso elbaite euhedral euhedral crystals facet fault feldspar fluorite garnet gem bearing gem pegmatites Gemstone Corporation gemstones Geological Ghundao Hill Gilgit gneiss green Gübelin Haramosh Hunza ruby Hunza Valley inclusions INDIAN PLATE Indus suture Island Arc Karakoram Katlang pink topaz Katlang topaz Kohistan Kohistan Island Arc limestone marble Mardan melange mica Mingora moonstone muscovite ND ND ND occur Occurrences in Pakistan Pakistan pargasite pegmatites Peshawar photo A. H. Kazmi plagioclase pyrope range refractive index rocks rutile sapphire schist schorl Shingus silicate Skardu specific gravity spinel Stak Nala stones suture zone synthetic Tahirkheli topaz topaz crystal tourmaline transparent varieties of quartz veins vugs and cavities yellow zircon