Goshenite

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Physical & Optical Properties

Category Semi-Precious Gems

Mohs Hardness 7.5 – 8.0

Specific Gravity 2.6 – 2.9

Refractive Index 1.562 – 1.615

Crystal System Hexagonal

Luster Vitreous

Cleavage Indistinct

Fracture Conchoidal

Color various

Birefringence 0.003

Dispersion 0.014

Mohs Hardness

Mohs Hardness: 7.5 – 8.0

1 Soft10 Hard

Crystal System

Value & Market

Price Tier Moderate ($50-500/ct)

Where to Buy Goshenite

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

Goshenite can be colored yellow, green, pink, blue and in intermediate colors by irradiating it with high-energy particles. The resulting color depends on the content of Ca, Sc, Ti, V, Fe, and Co impurities. - Ibragimova, E. M. et al.(2009). "Correlations between admixtures and color centers created upon irradiation of natural beryl crystals". 7.5 to 8Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 2.60 to 2.90Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) IndistinctArthur Thomas, Gemstones (2009) ConchoidalArthur Thomas, Gemstones (2009) 1.562 to 1.615Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Uniaxial/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 0.003 to 0.010Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 0.014Michael O?Donoghue, Gems, Sixth Edition (2006) ColourlessGemdat.org, Management Team (2012) Transparent,TranslucentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) VitreousArthur Thomas, Gemstones (2009) HexagonalHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) PrismaticArthur Thomas, Gemstones (2009) Goshenite information at mindat.org Myanmar  Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Pakistan  E.Ya.Kievlenko, Geology of gems, 2003, p. 110 Sri Lanka  Econ Geol (1981) 76:733-738 USA  Fisher, J. 2002. Gem and rare-element pegmatites of southern California. Mineralogical Record, Volume 33, Number 5: pages 390-396, photographs. Osborn, P. (2005) Personal communication between Phillip Osborn of Hemet and Scott L. Ritchie of Temecula, California; description of beryl discovery on southwestern most Oceanview lode exposure; March. mindat.org

About Goshenite

Goshenite is the pure, colorless variety of beryl (beryllium aluminum silicate), valued for its exceptional clarity and transparency, with a vitreous luster and hardness of Mohs 7.5–8. It forms in granite pegmatites and has been mined in Goshen, Massachusetts (its namesake), as well as in Brazil, China, Canada, and Pakistan. Historically used as a lens substitute and prized for lenses and eyeglasses before optical glass production, it is today faceted into brilliant stones for collectors and designers.