Turquoise (Synthetic) | Gemopedia

Some gems, like turquoise, are highly coveted but rare to find, much less in the sizes and quality people dream of owning. Laboratory created jewels offer you the best of both worlds. You get the beauty of a beloved gemstone, but at a budget friendly price. The term synthetic refers to a man-made material with a natural counterpart. The synthetic material replicates the chemical, optical and physical properties of the natural version with little or no variation.
Alternate
Names
Gilson Synthetic Turquoise, Gilson Turquoise
Colors
Light To Medium Blue Sometimes With Spider Web Matrix

Turquoise (Synthetic) Classification

Common Name

Turquoise (Synthetic)

Species

Turquoise

Variety

Synthetic Turquoise

Colors

Light To Medium Blue Sometimes With Spider Web Matrix

Alternate Names

Gilson Synthetic Turquoise, Gilson Turquoise

Gemstone Groups

Key Separations

RI, magnification, appearance and spectrum

Comments

Turquoise (Synthetic) Optical Properties

Transparency

Semitranslucent - Opaque

Refractive Index

1.61-1.65

Birefringence

0.04

Optic Character

Biaxial

Optic Sign

Positive

Polariscope Reaction

Aggregate (AGG)

Fluorescence

SWUV: Inert
LWUV: Inert to weak greenish yellow

CCF Reaction

Pleochroism

None

Dispersion

Comments

Turquoise (Synthetic) Chemistry & Crystallography

Chemical Name

hydrated copper aluminum phosphate

Chemical Formula

CuAl6(PO4)4(OH)8-5H2O

Synthesis

probably a ceramic technique

Crystal System

Triclinic

Classification

Phosphate

Nature

Synthetic

Crystallinity

Aggregate

Comments

Turquoise (Synthetic) Characteristic Physical Properties

Hardness

5-6

Streak

Specific Gravity

2.38-2.88 Typical:2.74

Toughness

Varies

Inclusions

Synthetic turquoise has tiny blue microspheres that give it a "cream-of-wheat" appearance. Stones might have blue thread like inclusions and artificial black matrix that is even with the surface.

Luster

Vitreous

Stability

Fracture

Conchoidal, Granular

Cleavage

None

Comments

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