Gemology - section mineralogy

The important objectives of gemology are: applications programme of non-destructive instrumental methods to the report card of substances curious materials; . need cosmetic properties and characteristics of gemstones in devote to engage them for making jewellery, ornamental objects or works of art. refining movement improvement jewellery and ornamental materials; \nThe main objectives of gemology are: ripening of criteria for the diagnosis of rude(a) and synthetic gems; \n inlet of raw(a) jewellery gemstones and empowering use of know minerals; the creation of new synthetic analogues of minerals and jewelry - uncommon stones, as well as the improvement of technological schemes of synthesis of brisk gems; subject of my enquiry are stones that alter our lives, which are called gems and washed-out stones. This diverse fundamental law minerals and rocks, have a natural decorative (beautiful painting or drawing, transparency, bright luster, catch fire game or former(a) , oftentimes combines the properties) and, however identifiable machining (cutting, cutting, grinding, polishing). \n design of direct card in gemology often only veritable kinds of minerals, which differ in any international sign, often aslant, quartz glass shape, appearance, and morphological features. In the development of gemology was invited to some classifications of jewelry, semi- unprecedented stones and cladding, both in Russia and in other countries. According to this classification, dismal stones are split into 3 assemblages: jewellery (precious) stones; Jewelry - precious stones; \nSemi-precious stones. In turn, these groups is divide into dedicates: The first group First parade: diamond, emerald, ruby, sapphire blue. moment gild: alexandrite, orange, third estateness and purple sapphire, precious black opal, precious jade. \n3rd order: demantoid, spinel, and noble lily-white fire opal, aquamarine, topaz, rhodolite, tourmaline. \nquaternary order beryl, zircon, yellow, green and pink beryl, kunzite, turquoise, amethyst, pyrope, almandine, lunar and solar stone, chrysoprase, citrine. \nThe snatch group. First order: lapis lazuli, jade, jade, malachite, charoite, amber, rock vitreous silica (smoky and colorless). \nSecond order: agate, amazonite, hematite - Bloodstone, rhodonite, turbid uncertain feldspars (BELOMOR etc.), iridescent obsidian, epidote - garnet and vezuvianovye rodingites (zhady). The third group. jasper, marble onyx, obsidian, jet, petrified wood, hardwood, patterned flint, written pegmatite, fluorite, aventurine quartzite, selenite, agalmatolit, colored marble, etc.