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Rubellite

Tourmaline

By Tim Matthews, JD, FGA, GG, DGA,
CEO and President of JTV (retired)
Published: June 2014
Modified: September 2023
Rubellite Polished Rubellite Rough Rubellite Jewelry
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Table of Contents
  • General Information
  • Rubellite Colors
  • Countries of Origin
  • Care

One of the most desirable of all tourmaline varieties, rubellite is the pink to red variety of elbaite tourmaline, but crystals may also include brownish, orangey or purplish hues. Stones that exhibit pure red or slightly purplish red color are considered the most valuable. With the exception of ruby and red spinel, rubellite is the only other gem known to occur in such a rich, dark red color. Incredibly scarce, with 'eye clean' material even rarer, rubellite is one of those special gems that demands a place in your gemstone collection!

General Information

  • Classification
  • Optical Properties
  • Characteristic Physical Properties
  • Chemistry & Crystallography
Common Name
Rubellite
Species
Tourmaline
Transparency
Transparent - Translucent
Dispersion
Strength: Moderate Fire Value: 0.017
Refractive Index
1.624-1.644
Tolerance:(+0.011/-0.009)
Birefringence
0.018-0.02
Optic Character
Uniaxial
Optic Sign
Negative
Polariscope Reaction
Doubly Refractive (DR)
Fluorescence
SWUV: Inert to weak red to violet
LWUV: Inert to weak red to violet
Pleochroism
Dichroic, medium to strong dark red and pinkish red
Hardness
7-7.5
Streak
White
Specific Gravity
3.000-3.260 Typical:3.060
Toughness
Good
Inclusions
Rubellite tourmaline is Type II clarity stone. Stones might contain liquid and gas inclusions that are long and thin, reflective gas-filled fractures and color zoning.
Luster
Vitreous
Stability
Very Good
Fracture
Conchoidal, Uneven
Cleavage
Poor, in two directions
Chemical Name
complex boro-silicate of Al, Mg and Fe
Chemical Formula
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Crystal System
Trigonal
Chemistry Classification
Silicate

Rubellite Colors

  • Pink Rubellite
    Pink
  • Pink Rubellite
    Pink
  • Red Rubellite
    Red

Countries of Origin

Afghanistan; Russian Federation; Mozambique; Unknown; China; Brazil; Madagascar; Zambia; Nigeria; Thailand; India

Care

Untreated, heated or irradiated stones just need normal care. Avoid temperature changes, steaming, chemicals, and ultrasonic cleaners in dyed, oiled or resin filled stones.

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