Mohs scale of mineral hardness

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  • Blue Topaz Research Paper

    the Blue topaz). To enhance the blue in the stone, it must be treated by heating and irradiation (About the Blue topaz). Untreated Treated https://www.etsy.com/listing/194949293/rough-blue-topaz-crystals-raw-natural http://www.palagems.com/blue_topaz.htm As you can see, even though the picture on the right is cut, the color is much brighter and vibrant than the raw untreated topaz. The Mohs' Hardness scale is the 1 - 10 scale of minerals hardness. The blue topaz is number 8 on that list. It's chemical composition is Al2 SiO4 (R,OH)2, which is fluor containing aluminum silicate (Schumann). Another quality of the blue topaz is that it has perfect cleavage (Schumann). Because of its perfect cleavage, the topaz is susceptible to breaking (King). When scratched, a mineral may leave a streak of a color behind. The blue topaz has a colorless streak (Schumann). The mineral has a vitreous luster (Schumann). Topaz can be cut in a variety of shapes. Topaz can be cut into a square, round, octagon, pear, oval, heart, and many others (About the Blue topaz) Pear cut Oval cut Heart cut gemsforsale.org http://www.valentinejewellery.in http://www.bidorbuy.co.za The average…

    Words: 716 - Pages: 3
  • Zinc Elements Lab

    Based on Physical and Chemical Properties, Determination of Identities of Zinc, Sodium, Beryllium, Copper and Boron By: Shreya Uppala, Lizzy Jolly, and Kyrie Harrell Results: The first element we tested was zinc. Since zinc was already known, the density was stated to be 7.13g/mL and the hardness was a 2.5 based on the Mohs Hardness Scale. No magnetic attraction was observed when in contact with a magnet. Zinc had a shiny appearance with a light gray color and the strips of zinc added to…

    Words: 1009 - Pages: 5
  • Piemontite

    Chalcopyrite is a copper iron sulfide mineral. Its coloring is metallic brassy to a brown-orange, and on the Mohs scale, it has a hardness of 3.5 to 4. The chemical formula of chalcopyrite is CuFeS2. It is the most commonly occurring copper containing mineral in New Zealand, but it is only created near volcanic areas. On the metaphysical level, chalcopyrite is used for meditation, specifically for opening the third eye chakra (crown chakra), and physical healing. The stone clears any energy…

    Words: 1997 - Pages: 8
  • Blue Topaz History

    The Mohs' Hardness scale is the 1 - 10 scale of minerals hardness. The blue topaz is number 8 on that list. It's chemical composition is Al2 SiO4 (R,OH)2, which is fluor containing aluminum silicate, which is fluorosilicate (Schumann). Another quality of the blue topaz is that it has perfect cleavage (Schumann). Because of its perfect cleavage, the topaz is susceptible to breaking (King). When scratched, a mineral may leave a streak of a color behind. The blue topaz has a colorless streak…

    Words: 950 - Pages: 4
  • Moissanite Jewellery Industry Essay

    A study of moissanite jewellery industry and its global market Moissanite is used as an alternative to diamond jewellery. It is regarded at par with diamond when compared on the basis of quality and physical properties. Moreover, moissanite glitter more than diamond due to a higher refractive index and is as hard as diamond. A layman may barely distinguish between the two and mostly a distinction can be drawn through a laboratory test. However, the moissanite jewellery is cheaper in comparison…

    Words: 1061 - Pages: 5
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