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Diamonds and Diamond Grading 19
Synthetics and Treatments
9
Geology
Post-Graduate
11/01/2018

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Cards

Term
Chemical Vapor Deposition (CVD)
Definition
an industrial process adapted to allow growth of synthetic diamond from carbon-rich gas in thin layers onto a silicon or diamond surface
Term
Graphitization
Definition
graphite formation around a diamond's mineral inclusions and feathers that results from the extreme conditions of HPHT processing
Term
Half-Life
Definition
the length of time required for half of a group of atoms of a particular type (radioactive) to decay into another type (non-radioactive)
Term
High Pressure, High Temperature (HPHT)
Definition
diamond synthesis method that mimics the pressure and temperature conditions that lead to natural diamond formation
Term
Internal Laser Drilling (ILD)
Definition
a clarity treatment that uses a laser to expand an existing cleavage or create a new one, allowing the introduction of a bleaching solution
Term
Irradiation
Definition
exposure of a material to radiation; causes color change in diamonds
Term
laser Drilling
Definition
using a concentrated beam of laser light to reach a diamond's dark inclusions and disguise or eliminate them
Term
Linear Acceleration
Definition
a machine used to accelerate electrons to high energy along a straight path
Term
Synthetic Diamond
Definition
manufactured diamond with essentially the same physical, chemical, and optical properties as natural diamond
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