Rutile (Synthetic) | Gemopedia

Synthetic rutile can be produced synthetically by either the Czochralski method or flame fusion method. Because of rutile's high refractive index, it was used as an early diamond simulant. However, it is rarely used today as such because of its low hardness. 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.
Alternate
Names
Tirum Gem, Titangem, Titania Brilliante, Titiana Midnight Stone, Titianium, Titianium Rutile, Titanstone, Tania-59, Astryl, Brilliante, Diamothyst, Jarra Gem, Kenya Gem, Kima Gem, Kimberlite Gem, Lusterite, Star-Tania
Colors
Light Yellow, Blue, Bluish Green, Orange, Dark Brown To Nearly Black

Rutile (Synthetic) Classification

Common Name

Rutile (Synthetic)

Species

Rutile

Variety

Colors

Light Yellow, Blue, Bluish Green, Orange, Dark Brown To Nearly Black

Alternate Names

Tirum Gem, Titangem, Titania Brilliante, Titiana Midnight Stone, Titianium, Titianium Rutile, Titanstone, Tania-59, Astryl, Brilliante, Diamothyst, Jarra Gem, Kenya Gem, Kima Gem, Kimberlite Gem, Lusterite, Star-Tania

Gemstone Groups

Key Separations

High luster, extreme fire, OTL RI reading, eye visible doubling, poor polish. Well proportioned stones cut as round brilliants show no see through.

Comments

Misnomers: rainbow diamond, rainbow magic diamond, synthetic diamond

Rutile (Synthetic) Optical Properties

Transparency

Transparent

Refractive Index

Over the Limit 2.616-2.903

Birefringence

0.287

Optic Character

Uniaxial

Optic Sign

Positive

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

Dichroic, strong, varying shades of body color

Dispersion

Strength: extreme fire Value: 0.33

Comments

Rutile (Synthetic) Chemistry & Crystallography

Chemical Name

titanium oxide

Chemical Formula

TiO2

Synthesis

Czochralski pulled or flame fusion

Crystal System

Tetragonal

Classification

Oxide

Nature

Synthetic

Crystallinity

Crystalline

Comments

Rutile (Synthetic) Characteristic Physical Properties

Hardness

6-6.5

Streak

Grayish Black, Pale Brown, Light Yellow

Specific Gravity

4.29-4.23 Typical:4.26

Toughness

Varies

Inclusions

Synthetic rutile is generally flawless but gas bubbles are possible.

Luster

SubAdamantine

Stability

Fracture

Conchoidal, Uneven

Cleavage

Good, in two directions

Comments

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