Synthetic Emerald | Gemopedia

Synthetic refers to a man-made material with a natural counterpart. The synthetic crystal replicates the chemical, optical and physical properties of the natural crystal with little or no variation. Synthetic emeralds offer you the best of both worlds. You get the beauty of a beloved, rare gemstone, but at a budget-friendly price!
Colors
Light To Very Dark Green To Strongly Bluish Green
, Slightly Yellowish Green

Synthetic Emerald Classification

Common Name

Synthetic Emerald

Species

Synthetic Beryl

Variety

Synthetic Emerald

Colors

light to very dark green to strongly bluish green, slightly yellowish green

Alternate Names

Gemstone Groups

Key Separations

Refractive index, birefringence, optic character distinguished beryl from other materials, but magnification is essential for separating synthetic beryl from natural material.

Comments

Russian product: RI 1.572 to 1.578 and 1.579 to 1.584, birefringence 0.006 to 0.007, SG 2.63 to 2.73Chinese product: RI 1.570 to 1.572 and 1.576 to 1.578, birefringence 0.006, SG 2.67 to 2.71Biron product RI 1.569 to 1.573(+/-0.001) some 1.570 to 1.578, birefringence 0.004 to 0.008, SG 2.68 to 2.71. Misnomer: cultured emerald

Synthetic Emerald Optical Properties

Transparency

Transparent To Translucent

Refractive Index

1.571-1.584 Tolerance: (+0.007/-0.002)

Birefringence

0.004-0.008

Optic Character

uniaxial

Optic Sign

negative

Polariscope Reaction

doubly refractive (DR)

Fluorescence

SWUV: Russian and Biron material:InertChinese material: moderate red
LWUV: Russian and Biron material:InertChinese material: moderate red

CCF Reaction

Sometimes bright red; not conclusive

Pleochroism

Value: moderate to strong green and blue-green or variation in tones of bodycolor

Dispersion

Strength: weak fire Value: 0.014

Comments

Synthetic Emerald Chemistry & Crystallography

Chemical Name

beryllium aluminum silicate

Chemical Formula

Be3Al2(SiO3)6

Synthesis

hydrothermal

Crystal System

Hexagonal

Classification

Silicate

Nature

Synthetic

Crystallinity

Crystalline

Comments

Synthetic Emerald Characteristic Physical Properties

Hardness

7.5

Streak

white

Specific Gravity

2.63-2.73

Toughness

Good

Inclusions

Hydrothemal synthetic emerald often contains fingerprints, liquid and 2-phase inclusions, nailhead spicules, seed plates, opaque black hexagonal plates, synthetic phenakite or chrysoberyl crystals, gold inclusions, numerous red brown and fine white particles. The white material can also have the appearance of "comet tails" or stringers. In the Chinese and some Russian material wavy or chevron like growth can be seen.

Luster

Vitreous

Stability

Good

Fracture

Conchoidal

Cleavage

Very Imperfect, Basal

Comments

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