Synthetic Diamond | Gemopedia

Some gems, like diamond, are highly coveted but can be unattainable, especially in the sizes and quality people dream of owning. Synthetic gems offer you the best of both worlds. You get the beauty of a beloved, rare gemstone, but at a price you can afford. The term synthetic refers to a man-made material with a natural counterpart. The synthetic crystal replicates the chemical, optical and physical properties of the natural diamond with little or no variation.
Alternate
Names
Lab Created Diamond
Colors
Near Colorless
, Faint To Dark Brown
, Gray
, Dark Blue

Synthetic Diamond Classification

Common Name

Synthetic Diamond

Species

Synthetic Diamond

Variety

Cvd Synthetic Diamond

Colors

near colorless, faint to dark brown or gray and dark blue

Alternate Names

lab created diamond

Gemstone Groups

Key Separations

Advanced laboratory testing

Comments

Usually very shallow stones.

Synthetic Diamond Optical Properties

Transparency

Transparent To Opaque

Refractive Index

Over the Limit 2.417-2.417

Birefringence

Optic Character

NA

Optic Sign

NA

Polariscope Reaction

singly refractive (SR)

Fluorescence

SWUV: weak to moderate orange to yellow orange
LWUV: Inert to weak orange to yellow-orange.

CCF Reaction

Pleochroism

Dispersion

Strength: moderate fire Value: 0.044

Comments

Synthetic Diamond Chemistry & Crystallography

Chemical Name

carbon

Chemical Formula

C

Synthesis

CVD

Crystal System

Cubic

Classification

Nature

Synthetic

Crystallinity

Crystalline

Comments

Synthetic Diamond Characteristic Physical Properties

Hardness

10

Streak

Specific Gravity

3.51-3.53

Toughness

Good

Inclusions

CVD synthetic diamonds are often inclusion free but might contain pinpoint brown or black inclusions. The black inclusions might be graphite. If a seed crystal is present there might be flux inclusions from a HPHT diamond.

Luster

Adamantine

Stability

Excellent

Fracture

Uneven

Cleavage

Perfect Octahedral In Four Directions

Comments

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