Gemstones are many peoples prized possessions. Like at my house my mother has a translucent diamond ring‚ diamonds mineral name is diamond. My parents gave me a red ruby ring for my tenth birthday. The mineral name for a ruby is corundum. Gemstones are minerals that are cut from naturally occurring crystals. Gemstones are minerals that when cut and polished they have beauty of such quality that they command a price. That is what makes the process of producing gems profitable. For them to
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Sapphire (Greek: σάπφειρος; sappheiros‚ ’blue stone’‚ which probably referred instead at the time to lapis lazuli) is a gemstone variety of the mineral corundum‚ an aluminum oxide (α-Al2O3). Trace amounts of other elements such as iron‚ titanium‚ chromium‚ copper‚ or magnesium can give corundum blue‚ yellow‚ pink‚ purple‚ orange‚ or a greenish color. Chromium impurities in corundum yield a red tint‚ and the resultant gemstone is called a ruby. Commonly‚ sapphires are worn in jewelry. Sapphires may be found
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Module A Lesson 2: Famous Gemstones and Jewellery Diamond Encrustations British Crown Jewels Koh-I-Noor diamond: (“Mountain of Light”) One of world’s largest diamonds The Cullinan Diamond: largest diamond rough ever found Hope Diamond Deep blue colouration Lack of internal flaws Shows VS1 clarity First sold to King Louis XIV Top ten diamonds by size Diamonds >10 carats = exquisite Diamonds >50 carats = possession of museum/wealth people Diamond >199 carats = not sold
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The word padparadscha is derived from a Sanskrit term ‘padma raga’ which means (Padma= Lotus‚ Range= Color) the color of lotus flower. The padparadscha is a gemstone variety of mineral corundum. It was first mined in Sri Lanka. This type of gemstones belongs to the family of sapphires. It is the rarest of all the colors of sapphires. It is believed that this gemstone is the most durable. Padparadscha is cut in a number of shapes such as circle‚ cushion and oval. The colour tone is available from
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GEMSTONES MEANING Agate [pic][pic]AGATE (MEANING): IT IS FOUND IN WHITE‚ GREY‚ RED OR WOOD COLOR. IT CONFESSES INTELLIGENCE‚ WILL POWER‚ WISDOM AND ELOQUENCE OF SPEECH. IT SAFEGUARDS THE WEARERS FROM DECEPTION OR FOUL PLAY. IT STRENGTHENS THE HEART‚ PROTECTS THE WEARER AGAINST INFECTIONS‚ FEVERS AND RISKS OF TRAFFIC OBSTACLES. Agate is particularly helpful to those in service and professions and endures a successful and smooth career. It is an ideal treasure for those engaged in farming
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Origin of name: from the Latin word "rubidius" meaning "dark red" or "deepest red". Atomic Number: 37 Symbol: Rb Atomic Weight: 85.4678 Say what? Rubidium is pronounced as roo-BID-ee-em. Discovery: R. Bunsen‚ G. Kirchoff 1861 (Germany)‚ discovered rubidium in the mineral petalite via its dark red spectral lines. Element Classification: Alkali Metal Density (g/cc): 1.532 Melting Point (K): 312.2 Boiling Point (K): 961 Appearance: soft‚ silvery-white
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Part 1: Recording Observations In the chart below‚ record your observations of each test for the seven minerals. After you have completed all tests‚ name the minerals in Part 2 of this worksheet. An example of how to fill out the chart is illustrated below. |Recorded Observations for Minerals 1-7 | |Tests
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XBM-gravity spiral chute Detailed Product Description Spiral Separator 1.corundum surface 2.easy operation 3.high efficiency Description of Spiral SeparatorsSpiral separators are gravity concentrators and separate minerals of different specific gravity according to their relative movement in response to gravity‚ centrifugal force and other forces in the fluid medium. It has extremely good performance and effects in processing placer
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this worksheet. Help: The minerals in the virtual lab are numbered to conceal their identities‚ but the minerals will include seven of those listed below. To help you identify them‚ refer to the Mineral Identification Job Aid. Borax Calcite Corundum Graphite Gypsum Orthoclase feldspar Pyrite Quartz Talc Topaz 4. Post Part 1‚ Part 2‚ and Part 3 in this worksheet as an attachment to your Assignment Section. Delete the introductory instructions in this worksheet before you submit it to
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Abstract The purpose of this experiment is to synthesize isopentyl acetate via an esterification reaction between glacial acetic acid and isopentyl alcohol‚ using concentrated sulfuric acid as a catalyst. The product was washed using sodium bicarbonate and water‚ then dried with anhydrous sodium sulfate. It was then distilled using a standard simple distillation apparatus. The percent yield of isopentyl acetate was 60.39%. This may have been low due to incomplete distillation or evaporation once
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