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Man Made Diamond Information Glossary

boule - A synthetic single-crystal mass grown in a furnace.

carat - The unit of weight by which a diamond is measured. One carat equals 200 milligrams.

chemical vapor deposition (CVD) - A process to deposit a layer of a material from a gaseous phase onto a surface.

crucible - A vessel made of material that does not melt easily; used for high temperature applications.

crystal - Any solid material in which the component atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry.

cubic zirconia (CZ) - Zirconium oxide (ZrO2), a mineral that is extremely rare in nature but is widely synthesized for use as a diamond simulant.(Wikipedia)

diamond wafer - A flat piece of diamond upon which microprocessors can be carved.

feathers - The small stress fractures in a diamond formed during its crystallization process.

fire - Colored light reflected from within a diamond.

high pressure, high temperature (HPHT) - A process that forms crystals in an environment of very high pressure and temperature.

inclusions - Internal imperfections within a diamond.

kilo pascal (kPa) - One thousand newtons per square meter.

micron - One millionth of a meter.

Mohs hardness scale - A scale that ranges from 1-10 in measuring a gem's hardness.

Moissanite - Moissanite is a trade name name given to silicon carbide (chemical formula SiC) for use in the gem business.(Wikipedia)

multi-crystalline - A mineral made up of more than one crystal. A diamond is a single crystal.

newton - The unit of force giving a mass of one kilogram an acceleration of about one meter per second per second.

refractive index (RI) - The speed of light in a vacuum as opposed to its speed in a medium.

seed crystal - A small piece of single crystal mineral from which a large crystal is to be grown.

substrate - The surface or medium that serves as a base for something.

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