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[DOCX File]Program Specification .ac.th
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••Distinguish natural gemstones from their imitations and identify the nature of man-made simulants such as synthetics, pastes and composites. ••Detect different forms …
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[DOC File]Crystals and Gemstones - Beacon Media
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Minerals are all formed by natural processes and have a crystalline structure. Gemstones. Gemstones are mineral crystals that are beautifully colored or sparkling and are tough enough to be cut and polished. There are 4,900 different kinds of minerals, but only about 130 of them are gemstones. Of these, only about 50 are commonly used.
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[DOCX File]Alamance-Burlington School System
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Training students to know and use basic tools to identify the types and kinds of natural gemstones. That is very important and less important. Also analysis and identification of gemstones in each steps.
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Gemstone Identification: How to Identify Gemstones | JTV.com
Precious Gemstones. Some precious gemstones are a form of the mineral corundum, which has a hardness of 9. Corundum is a rare mineral made up of closely packed aluminum and oxygen atoms, and its formula is Al2O3. If small amounts of chromium replace some of the aluminum atoms in corundum, a bright-red gemstone called a ruby is produced.
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[DOCX File]Chapter 5: Minerals
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Some minerals are valuable because they are beautiful. Jade has been used for thousands of years in China. Diamonds sparkle on many engagement rings. Minerals like jade, turquoise, diamonds, and emeralds are gemstones. A gemstone, or gem, is a material that is cut and polished for jewelry. Many gemstones are minerals.
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[DOCX File]9. Luminescence under Ultraviolet Light
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Of the 3,500 or so minerals known, only a few, perhaps two dozen, are common in rocks, but many others are found in small quantities in rocks and some are important natural resources. Cooling and crystallization of magma or lava and the consolidation of pyroclastic materials account …
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[DOC File]Weebly
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6. natural diamonds is a mineral is not a mineral. 7. human bones is a mineral is not a mineral. 8. gold paint is a mineral is not a mineral. 14 Minerals and Rocks Name Date Class LESSON 1. Minerals. For this activity, you will need your textbook, a pencil, and a few items found around the house. 1.
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[DOC File]Rocks and Minerals
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Rocks, Crystals, Gemstones. God is Pure and Holy . God is our Rock. God is Truth. Spiritual Overview: Christians are the salt of the earth. Salt is a Biblical symbol of purity. Salt was used for seasoning and preserving food, as an antiseptic in medicine and with all kinds …
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[DOC File]Lesson 1 | Minerals
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Notes: Ch5 – What is a Mineral? Minerals are mined from the Earth’s crust. There are over 4000 known minerals. 8 elements make up most of them. The most abundant minerals are …
raw gemstone identification

How to identify natural gemstones