Rubellite

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Physical & Optical Properties

Category Semi-Precious Gems

Mohs Hardness 7.0 – 7.5

Specific Gravity 3.01 – 3.06

Refractive Index 1.614 – 1.666

Crystal System Trigonal

Luster Vitreous

Cleavage Poor

Fracture Sub-Conchoidal

Color various

Birefringence 0.014

Dispersion 0.017

Pleochroism Strong: dark red - pinkish-red

Mohs Hardness

Mohs hardness of Rubellite shown against the ten reference minerals, from talc (1) to diamond (10).

Mohs	Reference mineral	Rubellite
1	Talc
2	Gypsum
3	Calcite
4	Fluorite
5	Apatite
6	Orthoclase
7	Quartz	●
8	Topaz
9	Corundum
10	Diamond

Crystal System

Value & Market

Price Tier Moderate ($50-500/ct)

Where to Buy Rubellite

Blue Nile Fine jewelry retailer

James Allen Gemstone jewelry

Brilliant Earth Ethically sourced gems

Amazon Wide selection

Links may earn a commission at no extra cost to you.

Treatments

7 to 7.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 3.01 to 3.06Michael O?Donoghue, Gems, Sixth Edition (2006) Red to pink specimens are usually in the range 3.01�3.06. BrittleMichael O?Donoghue, Gems, Sixth Edition (2006) PoorMichael O?Donoghue, Gems, Sixth Edition (2006) Sub-ConchoidalArthur Thomas, Gemstones (2009) 1.614 to 1.666Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Uniaxial/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 0.014 to 0.040Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Strong: dark red - pinkish-redHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 0.017Walter Schumann, Gemstones of the world (2001) Transparent,Translucent,OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) VitreousArthur Thomas, Gemstones (2009) Inert to pinkishHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) TrigonalHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Prismatic to acicular crystalsMichael O?Donoghue, Gems, Sixth Edition (2006) Rubellite information at mindat.org Afghanistan  Bowersox and Chamberlin (1995) Bowersox and Chamberlin (1995) Glas (2002) Brazil  Cassedanne and Roditi (1996) Steger (1999) Cassedanne and Roditi (1996) Cassedanne and Roditi (1996) Bastos (2002) Cassedanne and Roditi (1996) Madagascar  Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-84 Mozambique  Henn and Bank (1997) Henn and Bank (1997) Myanmar  Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Kyi et al. (2005) Namibia  Mossman (2002) Russia  Godovikov and Bulgak (1993) Godovikov and Bulgak (1993) Godovikov and Bulgak (1993) Sri Lanka  USA  Fisher et al. (1999) Fisher et al. (1999) Laurs (2001, 2002, 2004) Freeman (2005)