A to Z Crystal Directory - Patinkas: One Stop
B rief Introduction In relation to crystal healing and for the purpose of this directory, all crystals, minerals, non-minerals and rocks are referred to generically
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Glossary | Select Stone
A A-frame A wooden or metal rack constructed in the shape of an “A” on which large stone slabs are shipped and stored. Abate To cut away so as to leave parts in
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Metallurgical Terminology Glossary | MetalTek
From Centrifugal Casting to Metallurgy MetalTek offers a glossary providing a comprehensive list of engineering and metal working definition of terms.
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Bullet lube ingredients, uses, sources, descriptions
There are far too many possible ingredients that could be used in bullet lube to list but many of the more common ones (and a
Structures and Mechanical Properties of Natural and Synthetic
diamond have been challenged by the large-scale production of synthetic diamond. The high-pressure synthesis essentially duplicates the natural high-pressure, high-temperature process [diamondsawsale, diamondsawsale].
The abrasion resistance of natural and synthetic diamond
Good quality synthetics were as resistant as good quality naturals. A small number of diamonds showed appreciably different resistances; in particular, type II material appeared more resistant. The reasons for these differences are discussed.
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Ultra-precision diamond cutting tools made of single-crystal diamond are used for processing resin molds for optical disk pickup lenses and smartphone camera lenses, as well as optical prism molds for liquid crystal panels.
Inclusions and Blemishes | Diamond Source of Virginia
Indented Natural – An indented natural is a portion of the original rough diamond crystal surface, or skin, which dips below the polished diamond’s surface. The original surface of the diamond’s skin might have growth markings that look like triangles (trigons) or parallel grooves.
Synthetic Ruby and O-Rings
Sapphire is next to diamond in wear resistance, and also was chosen for its long life. For the shaft, Bird Precision recommended their hardened proprietary alloy, which is known for its non-magnetic, non-corrosive and wear-resistant qualities.
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Synthetic Diamonds Vs Cubic Zirconia - Fashionhance
Synthetic diamonds, also known as man-made diamonds or lab created diamonds, are made in a lab by simulating the same temperature and pressure conditions that are present inside the earths crust which leads to the formation of a natural diamond.
Lab Created Diamonds | Man Made Diamonds | MiaDonna
These tiny carbon atoms fall onto a diamond substrate and build up layers resulting in a rough diamond crystal. This process takes between six to ten weeks and yields gem-grade, Type IIa diamonds. In recent years, CVD research has gained popularity and now modified versions of CVD are being used.
Diamond - The Gemology Project
Diamond cutters usually strive for maximum weight retention from the rough and sometimes omit the culet. Small culets are considered acceptable by diamond graders and serve as the 58th facet in what is known as the standard round brilliant cut.
Gemology Online: Dictionary Diamond Terms
Since diamonds are resistant to acids, the solution actually dissolves the included crystal while leaving the diamond completely unharmed. The end result is a more transparent diamond. The structural stability of the diamond is not compromised in any way by this hole, and the process is permanent.