Strontium Titanate | Gemopedia

As its name implies, strontium titanate is an oxide combination of strontium and titanium that was originally created as a diamond simulant. However, strontium titanate gems are easy to distinguish from diamonds, as their high dispersion and considerably lower hardness are dead giveaways. For the most part, this jewel fell into obscurity when the hugely popular cubic zirconia (CZ) entered the market in the 1970's. While strontium titanate was originally believed to only be available via laboratory creation, it was discovered in natural form in the 1980's in Siberia and named tausonite in honor of a Russian geochemist. However, there was one problem with the crystals--they were SO small that they couldn't be cut into gems!
Alternate
Names
Fabulite, Wellington, Diagem, Dynagem, Jewelite, Kenneth Lane Jewel, Lusitgem, Marvelite, Pauline Trigere, Rossini Jewel, Sorella, Starilian, Strontium, Testotitianate , Zenithite
Colors
Mostly Colorless But Can Be Golden, Blue, Purple, Red, Orange, Brown

Strontium Titanate Classification

Common Name

Strontium Titanate

Species

Strontium Titanate

Variety

Colors

Mostly Colorless But Can Be Golden, Blue, Purple, Red, Orange, Brown

Alternate Names

Fabulite, Wellington, Diagem, Dynagem, Jewelite, Kenneth Lane Jewel, Lusitgem, Marvelite, Pauline Trigere, Rossini Jewel, Sorella, Starilian, Strontium, Testotitianate , Zenithite

Gemstone Groups

Key Separations

Poor surface polish, extreme fire, OTL RI reading, high heft and lack of doubling due to SR nature. Very little see through effect.

Comments

The natural form of SrTiO3 is Tausonite

Strontium Titanate Optical Properties

Transparency

Transparent

Refractive Index

2.409-0

Birefringence

Optic Character

NA

Optic Sign

NA

Polariscope Reaction

Singly Refractive (SR)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

None

Dispersion

Strength: extreme fire Value: 0.19

Comments

Strontium Titanate Chemistry & Crystallography

Chemical Name

strontium titanium oxide

Chemical Formula

SrTiO3

Synthesis

flame fusion

Crystal System

Cubic

Classification

Oxide

Nature

Synthetic

Crystallinity

Crystalline

Comments

Strontium Titanate Characteristic Physical Properties

Hardness

5-6

Streak

Specific Gravity

5.11-5.15 Typical:5.13

Toughness

Fair

Inclusions

Strontium titanate sometimes contain small gas bubbles. Stones might show polishing marks or scratches due to low mohs hardness.

Luster

SubAdamantine

Stability

Fracture

Conchoidal

Cleavage

None

Comments

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