Oxygen is the chemical element in the periodic table that has the symbol O and atomic number 8. The element is very common, found not only on Earth but throughout the universe, usually bound with other elements.
Oxygen: A nonmetallic element that is normally a colorless, odorless, tasteless gas that constitutes 28 percent of the Earth's atmosphere. Oxygen combines with many other elements easily.
An oxygen atom has two electrons in its outermost shell that are available to bond with the silicon atom.
C10H16O (oxygenated hydrocarbon)
The movie Jurassic Park popularized the myth that someday we may be able to extract DNA from the entombed insects within, ...
Advent of bottled oxygen (liquefied and compressed)
Successful experiments with chemical manufacture of very small rubies and sapphires in Paris, published by Frémy
Aucoc buys Parisian firm 'Lobjois' and changes it's name to 'La Maison Aucoc' ...
This process causes a controlled oxidation of the metal's surface to occur (oxygen atoms bond to surface atoms of the metal). Aluminum is often anodized, as is magnesium, titanium, and tantalum.
Group of silicate minerals that have each set of tetrahedrons surrounded by three oxygen atoms, forming a sheet like structure. shelly fracture Synonym of conchoidal fracture.
The minerals of the oxide class are those which contain oxygen bonded to one or more metallic elements. Hydroxides are compounds of a metallic element and water or the hydroxyl anion (OH)-.
Heating a gem in the presence of oxygen can activate such color centers in corundum.
Capillary Loops The blood vessels feeding oxygen to the skin, starting in the skin's dermis, looping towards the epithelium and returning into the dermis.
2, oxygen 46.8. Its hardness is 9 in the scale, and no mineral except the diamond equals it in this respect. This hardness gives it a wearing quality as a gem second only to the diamond.
It is silicon oxide, containing the two elements silicon and oxygen. Silicon itself is a dark, gray, crystalline element that seems half metallic, half non-metallic in its properties.
Bloodstone is said to strengthen and oxygenate the bloodstream, enhancing physical and mental vitality. It will strengthen the heart, spleen and bone marrow and aids in balancing iron deficiencies.
The local gem traders had learned to heat the brown zircons in an oxygen free environment to produce dazzling blue stones. To this day, the border area of Thailand and Cambodia remains the largest producer of gem quality zircons.
Since it a refractory in nature it can reacts with oxygen producing changes on the metal's surface .When a electric current is passed through the surface it forces oxygen to produce thick oxide layer and diffused white light produces stunning colors.
Moissan's first researches concerned the interchange of oxygen and carbon dioxide in the leaves of plants.
Just like "Water" is also known as H20, "Oxygen" is also known as O2, and "Hydrochloric Acid" is also known as HCl, "Simulated Diamonds" (or at least by far the most popular form of them) is known as Cubic Zirconia, or CZ.
Silicates - Mineral containing silicon and oxygen, along with other elements.
Skarn - A contact metamorphic rock, often containing well-formed crystals of silicate and other minerals.
Amethyst is found in cavities of rock where molten materials rich in silicon and oxygen from deep inside the earth have surfaced and cooled. The faster molten material cools, the smaller the resulting crystals that form will be.
Gold has no oxides and is not affected by oxygen in the atmosphere as are other metals. This is why gold does not tarnish -- tarnish is the result of metal reacting with oxygen in a process called oxidation.
A "reducing" atmosphere (one without oxygen) which can either be supplied via a high tech furnace, or simply by placing the gems to be treated in a closed container with charcoal), causes the number to go down (+3 to +2 for example).
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.
Tungsten Carbide is created by firing tungsten with carbon powder in an oxygen-free oven at 6,200oF. This process is called sintering, and it creates the hardest metal used in making jewelry.
Most lampwork artists use a bead making torch that burns either propane or natural gas for the fuel, surface mixed with air or pure oxygen (either from a tank or a lampwork oxygen concentrator) as the oxidiser.
Rock crystal quartz, the most common gem variety of quartz crystal, is, like all quartz, formed from the two most abundant elements in the earth's crust: silicon and oxygen.
A compound of two parts aluminum and three parts oxygen which occurs naturally as corundum. Alumina is the base of aluminous salts, a constituent of feldspars, micas, etc.
Formed from the two most abundant elements in the earth's crust: silicon and oxygen. Quartz has a high thermo-conductivity, which makes it feel cool to the touch.
Oxidation is a chemical process in which oxygen atoms bond to atoms of a material (like a metal) and electrons are transferred from the oxided material to the reduced material. Iron oxidizes when exposed to air and moisture, forming iron oxide (rust).
For an instance, a crystal of quartz is in hexagonal shape because of the manner the atoms of silicon and oxygen combine together. Generally, there are 2,000 minerals have been discovered. Oxygen is a component of several minerals.
Overview: Magnesite is composed of magnesium, carbon, and oxygen (MgCO3) and was named after its chemical composition. Magnesite is commonly found in white or gray and sometimes tinted yellow or brown.
In addition to zirconium, silicon and oxygen, zircon contains small quantities of rare earths and radioactive elements such as thorium and uranium. These inclusions give zircon differents hardnesses and properties.
On the mental/emotional levels, when sufficient oxygen is going to the brain (which requires large amounts) we feel alert, energized, clear, able to concentrate, and emotionally balanced.
Oxidation - Chemical process to blacken or tarnish. Slphur and oxygen is used on silver.
Oxide - A compound containing one oxygen atom per molecule.
Oxidize - The act of combining with oxygen molecules to make an oxide. Oxidized metal is rusted.
The resulting boules are opaque black, but when reheated in a stream of oxygen they change to various colours.
They may be single chains, so that of the four oxygen coordinating the Si atom, two are shared with adjacent tetrahedra to form an infinite chain with formula (SiO3)2-.
Mother-of-pearl primarily consists of calcium carbonate, a molecule which contains calcium, carbon, and oxygen.
Stainless steel remains "stainless" if it contains at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the ...
Metal becoming tarnished or darkened by exposure to oxygen or by the use of chemicals
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Corundum is a gem mineral composed of gas oxygen and light metal aluminum. The two most valuable corundum include Ruby and Sapphire.
Metal blackened by a reaction with oxygen. The appearance is accomplished by chemical means.
A setting in which small stones are set as close as possible, so that the piece literally looks "paved" with stones.
Botswana Agate: Use with high-pressure oxygen therapy; smoke inhalation.
Fire Agate: Master healer with color therapy; enhances all essences; grounds and balances; sexual & heart chakra binder; burns energy.
For example, corundum's chemical composition is represented by the formula Al203, which means it's essentially made of aluminum (AI) and oxygen (0), with two aluminum atoms for every three oxygen atoms.
It increases the flow of oxygen to the brain. Learning to relax is the secret of coping with life's ups and downs so it is recommended to join a relaxation class where you can learn to relax doing yoga or you can also opt for the Magnet Therapy.
A gem mineral of crystallized aluminum and oxygen. Ruby and sapphire are the most valuable corundum.
Small, soft metal beads that are squeezed shut to secure loops of threading material fasteners onto clasps.
The process wherein a metal mixes with oxygen and becomes rusted. Platinum and gold do not oxidize. Impurities in any alloys containing gold or platinum may oxidize but the actual metals do not.
Custom Jewelry ...
Bog-oak is old oak wood that has been blackened and preserved by being in low-oxygen Irish and Scotish peat-bogs for thousands of years. Bog-oak was carved and used as inexpensive Victorian era jewelry.
Exposure to oxygen or the air causes a black oxidation to form on the surface (silver-oxide), also known as tarnish. Silver is often alloyed with copper to form sterling silver (92.5 percent silver) for use in jewelry.
Topaz is aluminum silicate that gets its color from the inclusion of oxygen, fluorine, hydrogen, silicon or aluminum. It measures an 8 on the Mohs hardness scale, making it one of the harder gemstones, not far behind sapphires and rubies.
OXIDE. The product of the combination of oxygen with a metal or metalloid.
PANNING. Primitive process of washing gravel by placer miners in search for gems.
PEARLY. Resembling the sheen of the pearl.
Atomic Weight...Weight of an atom compared with an atom of oxygen (16.00).
Batholith... A huge body of plutonic rock that has been intruded deep into the earth's crust and latter exposed by erosion.
Cubic zirconia is a man-made compound of zirconium, oxygen and yttrium, which was discovered in 1937. It lacks the silicon of a true zircon, and is, of course, very much younger.
The overwhelming majority of our substance consists of carbon and the three gases oxygen, nitrogen and hydrogen. Everything else, about a dozen different elements, is "minerals.
Chemical composition -- A compound of sodium, calcium, aluminum, silicon, oxygen, and sulfur, usually found as a rock mixture of lazurite, calcite, and pyrite.
Color --Blue to violet-blue.
Optics -- R.I. 1.50.
Corundum (that’s aluminum and oxygen to you and me) is second only to diamond in hardness, and sapphires are the natal stone for the month of September. Sapphires are found in over 20 countries around the world, including the United States.
The use of anti-bacterial ointments is generally discouraged as they may block oxygen from the piercing as well as providing a place for stronger contaminants to breed. Alcohol and witch hazel are also considered ineffective cleaning agents.
Obsolete term for copper containing oxygen at about 0.03-0.07% which gave a level surface free of shrinkage cracks to the top of a casting.
Alloyed brass made by Tungum Alloy Co.
Oxidize: The metal surface, typically silver, is caused to combine with oxygen to create a darkening of the metal--the same as tarnishing, except it is limited to only the desired area to be darkened.
Originally from the Middle Ages, the term lampwork referred to oil lamps with a blowpipe directed into the flame to increase the heat generated. Today, modern torches use propane, natural gas, or hydrogen mixed with compressed air or pure oxygen to ...
painting, moving heavy furniture, doing sports so that you don't brake it or get it dirty. Also, when you are not wearing your jewelry store it in a ziploc type of bag, the reason for that is that sterling silver oxidizes in contact with oxygen ...
Diamond-like substitutes, including "cubic zirconia," a crystalline compound synthesized from the elements ziconium and oxygen, attempt to mimic this light-dispersing property, though they fall short of diamond's brilliance and unrivaled hardness.
See also: Color, Mineral, Crystal, Rough, Water