tetragonal Simulant diamond simulant

Synthetic Rutile (Faceted)

Formula TiO2

Crystal Structure

CDL Notation

 #! Species: Synthetic Rutile
#! System: Tetragonal (4/mmm)
#! Habit: Tetragonal prism with dipyramid
tetragonal[4/mmm]:{110}@1.0 + {100}@0.8 + {101}@0.6

Crystal System tetragonal

Point Group 4/mmm

Crystal Forms (3)

{110} {100} {101}

Quick Facts

Hardness

6.0

Specific Gravity

4.25

Refractive Index

2.616

Optical Character

Uniaxial +

Physical Properties

Crystal System: tetragonal
Hardness (Mohs): 6.0
Specific Gravity: 4.25
Cleavage: Distinct on {110}
Fracture: Conchoidal to sub-conchoidal
Lustre: Adamantine to sub-metallic

Optical Properties

Refractive Index: 2.616
Birefringence: 0.287
Optical Character: Uniaxial +
Dispersion: 0.33
Fluorescence: Inert

Origin & Identification

Origin: Simulant
Growth Method: Flame Fusion
First Produced: 1948
Diagnostic Features: Extreme birefringence (0.287) causing obvious doubling of back facets, very high dispersion (0.330), yellowish body colour in most specimens, low hardness (6-6.5), very rare in modern trade