Synthetic Fancy Sapphire | Gemopedia

Synthetic refers to a man-made material with a natural counterpart and share the same chemical, optical, and physical properties. The synthetic crystal replicates the chemical and physical properties of the natural crystal with little or no variation. Synthetic fancy sapphires offer you the best of both worlds. You get the beauty of a beloved, rare gemstone, but at a price you can afford!
Alternate
Names
Lab Created Fancy Sapphire
Colors
Pink
, Purple
, Violet
, Bluish Violet
, Blue-Green
, Yellowish Green
, Green
, Yellow
, Yellowish Orange
, Orange
, Orange-Pink
, Reddish Orange

Synthetic Fancy Sapphire Classification

Common Name

Synthetic Fancy Sapphire

Species

Synthetic Corundum

Variety

Hydrothermal Synthetic Fancy Sapphire

Colors

pink, purple, violet, bluish violet, blue-green, yellowish green, green, yellow, yellowish orange, orange, orange-pink and reddish orange

Alternate Names

lab created fancy sapphire

Gemstone Groups

Key Separations

magnification, pleochroism and RI, birefringence, pleochroism,

Comments

Blue-violet, violet, blue-green and yellow green stones are colored by nickel and chromium and will have different pleochroism than natural stones.

Synthetic Fancy Sapphire 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: pink: inert to weak redviolet: some might show weak redgreen: generally inert but might fluoresce purplish redorange: weak orange
LWUV: pink: weak to moderate redviolet: some might show redgreen: generally inert but might fluoresce purplish red orange: moderate orange

CCF Reaction

Pink: weak red; Some green and violet red

Pleochroism

Value: pink: light orangy red to light purplish redpurple: violet to orangeblue violet: voiletish red and bluish violet. violet: violetish red and violetgreen: strong green to yellow-green or bluish green and bluish green to blue, might show moderate to strong reddish orange to yellowish orange and bluish green to yellowish greenyellow: weak yellow to light yelloworange: strong yellow-brown or orange and colorless

Dispersion

Strength: moderate fire Value: 0.018

Comments

Synthetic Fancy Sapphire Chemistry & Crystallography

Chemical Name

aluminum oxide

Chemical Formula

Al2O3

Synthesis

hydrothermal

Crystal System

Trigonal

Classification

Oxide

Nature

Synthetic

Crystallinity

Crystalline

Comments

Synthetic Fancy Sapphire Characteristic Physical Properties

Hardness

9

Streak

white

Specific Gravity

3.95-4.1

Toughness

Excellent

Inclusions

Look for chevron, wavy, zig-zag or mosaic growth patterns in hydrothermal synthetic fancy sappire because stones might show growth zoning similar to natural ruby. Fingerprint like inclusions with 2-phase and 3-phase inclusions can be seen in stones. Sometimes flake like copper inclusions are visible in reflected light. Orange stones usually have evenly distributed color.

Luster

Subadamantine To Vitreous

Stability

Very Good

Fracture

Conchoidal

Cleavage

None, May Show Parting On Twinned Stones

Comments

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