Chrysoberyl (Synthetic) | Gemopedia

Synthetic chrysoberyl is produced by a process called the Czochralski method. Material containing the elements that make up the mineral chrysoberyl (beryllium, aluminum and oxygen) are melted in a platinum crucible along with elements that produce the desired color (in this case, iron). A small chrysoberyl crystal (called a seed) attached to a rod is then dipped into the melt and slowly pulled away as the crystal grows around the seed. For this reason, the Czochralski method is also known as crystal pulling. Synthetic gems have the same chemical, optical, and physical properties of their natural counterparts, but are a more cost-effective alternative to a natural gem.
Colors
Blueish Green

Chrysoberyl (Synthetic) Classification

Common Name

Chrysoberyl (Synthetic)

Species

Chrysoberyl

Variety

Synthetic Chrysoberyl

Colors

Blueish Green

Alternate Names

Gemstone Groups

Key Separations

Comments

Synthetic chrysoberyl is colored by vanadium.

Chrysoberyl (Synthetic) Optical Properties

Transparency

Transparent To Translucent

Refractive Index

1.746-1.755
Tolerance: (+0.004/-0.006)

Birefringence

0.008-0.01

Optic Character

Biaxial

Optic Sign

Positive

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: inert
LWUV: Inert to weak red

CCF Reaction

Pleochroism

Trichroic, weak to moderate, varying shades of body color

Dispersion

Strength: weak fire Value: 0.015

Comments

Chrysoberyl (Synthetic) Chemistry & Crystallography

Chemical Name

beryllium aluminum oxide

Chemical Formula

BeAl2O4

Synthesis

Czochralski pulled

Crystal System

Orthorhombic

Classification

Oxide

Nature

Synthetic

Crystallinity

Crystalline

Comments

Chrysoberyl (Synthetic) Characteristic Physical Properties

Hardness

8.5

Streak

White

Specific Gravity

2.71-3.76 Typical: 3.73

Toughness

Varies

Inclusions

Synthetic chrysoberyl might show curved striae growth structure, gas bubbles and have needle like inclusions.

Luster

SubAdamantine

Stability

Very Good

Fracture

Conchoidal

Cleavage

Good, in one direction

Comments

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