Synthetic Ruby | Gemopedia

Some gems, like ruby, are highly coveted but rare to find, much less in the sizes and quality people dream of owning. Lab created jewels offer you the best of both worlds. You get the beauty of a beloved, rare gemstone, but at a budget friendly price. 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 crystal with little or no variation. Just like natural gemstones, each full production of Jewelry Television's lab created gemstones is quality graded to ensure excellence.
Alternate
Names
Lab Created Ruby
Colors
Slightly Orangy Red To Strong Red
, Slightly To Strongly Purplish Red

Synthetic Ruby Classification

Common Name

Synthetic Ruby

Species

Synthetic Corundum

Variety

Flux-Grown Synthetic Ruby

Colors

slightly orangy red to strong red, slightly to strongly purplish red

Alternate Names

lab created ruby

Gemstone Groups

Key Separations

magnification and RI, birefringence, pleochroism,

Comments

Synthetic Ruby Optical Properties

Transparency

Transparent To Opaque

Refractive Index

1.762-1.77 Tolerance: (+0.009/-0.005)

Birefringence

0.008-0.01

Optic Character

uniaxial

Optic Sign

negative

Polariscope Reaction

doubly refractive (DR)

Fluorescence

SWUV: stronger than natural ruby slightly weaker than LW red with possible bluish overtone
LWUV: stronger than natural ruby strong red possible bluish overtone

CCF Reaction

red

Pleochroism

Value: orange-red and purplish red, Kashan flux-grown show more orange-red than natural

Dispersion

Strength: moderate fire Value: 0.018

Comments

Synthetic Ruby Chemistry & Crystallography

Chemical Name

aluminum oxide

Chemical Formula

Al2O3

Synthesis

flux-melt

Crystal System

Trigonal

Classification

Oxide

Nature

Synthetic

Crystallinity

Crystalline

Comments

Synthetic Ruby Characteristic Physical Properties

Hardness

9

Streak

white

Specific Gravity

3.95-4.1

Toughness

Excellent

Inclusions

Platinum platelets from the crucible that appear metallic in reflected light but appear dark when stone is lit from behind. Flux is often white, brownish, yellow or orange but can be colorless. Flux inclusions can appear like natural fingerprint inclusions, wispy veils, comet tails, coarse globules of flux that can have a myriad of appearances from drippy, tubular or rod like or icicle looking, to clouds and minute particles, Stone might display angular growth zoning similar to natural.

Luster

Subadamantine To Vitreous

Stability

Very Good

Fracture

Conchoidal

Cleavage

None, May Show Parting On Twinned Stones

Comments

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