Silicon dioxide
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Dioxide: A compound containing two oxygen atoms per molecule.
Disc Earring: A round flat stud attached to the earlobe with a post and clutch.
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SiO2 Silicon dioxide
Color(s):
clear, white, brown, yellow, purple, green, blue, Streak: white ...
CARBON DIOXIDE. Carbonic acid gas; a colourless gas 1524 times as heavy as air and twenty-two times as heavy as hydrogen.
CARBON SPOTS. Opaque black spots in the body of a diamond.
It is Silicon Dioxide the chemical formula is SiO2.
Colours
Colourless, White, Gray, Pink, Purple, Brown and Black.
Quartz (silicon dioxide,SiO2) is the most common mineral on Earth. It is found in nearly every geological environment and is at least a component of almost every rock type. It is also the most varied in terms of varieties, colors and forms.
Quartz: Silicon dioxide, one of the commonest of all minerals. It crystallizes in a the hexagonal system.
R
Rectifier: a device that changes alternating current to direct current.
When titanium dioxide (rutile) is surface diffused into a sapphire, and the heating and cooling is controlled so that it exsolves into needles, asterism is created in the stone.
Quartz is silicon dioxide, SiO2, the second most common mineral in the crust of the earth (less common than feldspar).
Lamprophyric magma is commonly rich in volatile compounds such as water and carbon dioxide. Latite...{lay'-tite} ...
Cubic Zirconia is formed in the lab from zirconium dioxide and is hard, flawless, generally colorless, and inexpensive alternatives to diamonds. Culet:A small facet at the bottom of some cut gemstones.
silica group Group of silicate minerals (tectosilicates) composed only of silica (silicon dioxide -- SiO2 ).
Quartz is a family of minerals with the same chemical composition (silicon dioxide) and similar physical properties.
When exposed to meteoric ground water containing dissolved oxygen and carbon dioxide, primary ore minerals near the surfaces of vein deposits may be altered to secondary minerals.
The artificial diamonds are formed by various techniques, the cubic zirconium is one in which the cubic crystalline form of zirconium dioxide is used to create an artificial diamond.
Rare though it is, yellow does in fact occur in quartz in Nature, if seldom, when there are traces of iron in the silicon dioxide.
Moissan's first researches concerned the interchange of oxygen and carbon dioxide in the leaves of plants.
The physical structure of opal is also unique; tiny spheres of silicon dioxide form a grid; between the spheres is water.
Titanium's compounds are particularly valuable in the making of fine jewelry: pure crystalline titanium dioxide (titania) is used as a gemstone. Titanium dioxide is also responsible for the star effect in certain sapphires and rubies.
Quartz: The family name for crystals composed of silica or silicon dioxide occurring in hexagonal crystals. The most common variety is colorless and transparent. This is often referred to as Clear Quartz, Rock Crystal or simply Quartz.
Ancient glass was made with a combination of silicon dioxide (common sand); calcium carbonate (limestone, calcite, aragonite or sea shells); and sodium carbonate (soda ash).
Quartz: The family name for naturally occurring crystals composed of silica or silicon dioxide occurring in hexagonal habit. The most common variety is colorless and transparent.
Carbon dioxide, oxygen and moisture in the air react chemically with the iron to produce the familiar red-brown coating that eventually causes the metal to crumble away.
A natural or commercially synthesized silicon dioxide crystal. Used in "quartz analog" or solid state digital watches.
Quartz is composed of silicon dioxide, a compound that is also strongly present in human chemical structure. Thus, the vibrations of crystal bowls are especially powerful in re-tuning us to our own natural inner music.
In composition, amethyst is quartz, silica dioxide. The purple coloring comes from manganese and iron in the crystals. It is often found in encrustations on other stones, or inside geodes.
These liquids contain water, carbon dioxide, special elements (such as fluorine and beryllium) and volatiles (substances that are readily vaporized) that have escaped from the magma through fractures and fissures.
Silica - Silicon dioxide, SiO2.
Silver - A fairly soft (2.5-3), very heavy (density 10.5), ductile and malleable metal. It is the best known conductor of heat and electricity.
A titanium dioxide mineral with needle-like inclusions (or foreign matter) within a stone. The rutile needles can be reddish (which is what rutile means in Latin).
A gemstone may be a pure chemical element (diamond is essentially pure carbon), a relatively simple chemical compound (quartz is silicon dioxide, SiO2), ...
Overview: Quartz is a crystalline rock or mineral composed of silicon dioxide. It is actually very common, and occurs in many varieties, a number of which are gemstones, some of which are very beautiful and very rare.
Sulfate: A salt containing sulfur dioxide.
Sulfur: An abundant, pale yellow, nonmetallic element used in black gunpowder, rubber vulcanization, the manufacture of insecticides and pharmaceuticals, ...
The ore was burned to create sulfur dioxide, the first step in the production of sulfuric acid. The resulting cinders were hematite (ferric oxide), and some attempts were made at using them in iron production (Newland and Hartnagel, 1928).
Amethyst - A silicon dioxide --quartz gemstone, rating 7 on the Mohs' hardness scale. Ranging in color from clear purple to bluish violet. Birthstone for February. Legendary powers: brings luck, ensures constancy, protects against magic.
rutile (n) the mineral titanium dioxide. Rutiles sometimes feature as inclusions in other gemstones. Rutile inclusions are often needle-like and may also produce asterism effects, e.g., in rubies.
Rutilite, also known as Rutile, is a mineral which consists of titanium dioxide, generally with a little iron. It is typically of reddish-brown in color, but deep red or black, with brilliant metallic or diamond-like luster is also seen.
Diffusion is the process of enhancing the colour of a stone by heating it in the presence of compounds such as iron oxide, chromium oxide and titanium dioxide.
Compounds & Effects - Acetylene
High concentrations of acetylene and carbon dioxide become asphyxiating by preventing normal supply of oxygen to the lungs. Acetylene also contains toxic impurities. Highly flammable and explosive.
The stone has its use in intaglios and cameos. It is actually silicon dioxide with the specific gravity ranges in between 2.65 to 2.66. The hardness of this stone is seven on Mohs scale and the refractive index varies in between 1.543 to 1.552.
Green rouge is chromium dioxide, which is used to polish precious metals, giving them a luster.
GREENSTONE ...
Carbonate: A substance treated with carbon dioxide, such as limestone.
Carbuncle: An almandine (garnet) cabochon.
Quartz includes a large group of minerals based on silicon dioxide. Rose quartz is a macrocrystalline form. It is a milky pink in color and it is believed that the pink color is due to a small amounts of titanium.
GREEN ROUGE
Green rouge is chromium dioxide, which is used to polish precious metals, giving them a luster.
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Rutilated quartz is a type of rock crystal which contains long, fine needles of rutile crystals (titanium dioxide). This beautiful stone is usually cut as a cabochon.
Diffusion-treated stones are already-cut stones that are heated in the presence of other compounds (like iron oxide, chromium oxide, titanium dioxide, etc.) that will infuse the extreme outer surface stone with color.
Citrine: From the quartz family, ranges from lemon yellow to brownish amber, a plentiful gemstone, it is often made by heating pale amethyst. Composition: Silicon dioxide; hardness: 7.0. Search Citrine ...
Zircon is zirconium silicate and Cubic Zirconia is a form of zirconium dioxide.
Metaphysical/Medical properties: The zircon is known as a stone of virtue.
mineralogical ones, including cost, availability, the material being worked, and the experience of the worker. Many artificial sandblasting abrasives are in use, too, as well as exotic things like ground walnut shells and solid carbon dioxide.
 See also: Oxide, Stone, Crystal, Mineral, Color
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