Brazilianite

Q: What is Brazilianite?

La brazilianita es un mineral fosfatado de sodio y aluminio de color verde amarillento a amarillo limón brillante, descubierto en 1944 en Minas Gerais, Brasil, de donde toma su nombre. Cristaliza en el sistema monoclínico formando cristales prismáticos bien desarrollados, transparentes a translúcido

Q: What is the hardness of Brazilianite?

Brazilianite has a Mohs hardness of 5.5, making it moderate for use in jewelry.

Q: What color is Brazilianite?

Brazilianite is primarily Various.

Q: How much does Brazilianite cost?

Brazilianite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.

Q: What is the crystal system of Brazilianite?

Brazilianite belongs to the Monoclinic crystal system.

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Physical & Optical Properties

Category Semi-Precious Gems

Mohs Hardness 5,5

Specific Gravity 2,98 – 2,99

Refractive Index 1,602 – 1,625

Crystal System Monoclinic

Luster Vitreous

Cleavage Good

Fracture Conchoidal

Color various

Birefringence 0,018

Dispersion 0,014

Pleochroism Very weak

Mohs Hardness

Mohs Hardness: 5,5

1 Soft10 Hard

Crystal System

Value & Market

Price Tier Budget (< $50/ct)

Where to Buy Brazilianite

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

This material has been reported to fade (Sinkankas, 1972) and to lose its greenish color completely on being heated above 140�C; irradiation did not reverse this change (Requardt et al, 1982) - Nassau (1984) 5.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references 2.98 to 2.99Walter Schumann, Gemstones of the world (2001) More from other references BrittleHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references GoodWalter Schumann, Gemstones of the world (2001) More from other references ConchoidalMichael O?Donoghue, Gems, Sixth Edition (2006) More from other references 1.602 to 1.625Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references Biaxial/+Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references 0.018 to 0.021Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references Very weakWalter Schumann, Gemstones of the world (2001) More from other references 0.014Michael O?Donoghue, Gems, Sixth Edition (2006) More from other references Green, yellowish-greenUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references VitreousArthur Thomas, Gemstones (2009) NoneWalter Schumann, Gemstones of the world (2001) More from other references MonoclinicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references Characteristically equant or spear-head shaped crystalsMichael O?Donoghue, Gems, Sixth Edition (2006) More from other references It occurs in phosphate-rich zones of granite pegmatites.Michael O?Donoghue, Gems, Sixth Edition (2006) Brazilianite information at mindat.org Brazil  Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 392 Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 392 USA  Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 392

About Brazilianite

La brazilianita es un mineral fosfatado de sodio y aluminio de color verde amarillento a amarillo limón brillante, descubierto en 1944 en Minas Gerais, Brasil, de donde toma su nombre. Cristaliza en el sistema monoclínico formando cristales prismáticos bien desarrollados, transparentes a translúcidos, con un brillo vítreo notable. Aunque es una gema relativamente rara y fue inicialmente confundida con el crisoberilo, sus cristales de gran tamaño y color llamativo la convierten en una joya de coleccionista muy apreciada. Los principales yacimientos mundiales se encuentran en Conselheiro Pena y Linópolis, en Minas Gerais, Brasil, y en New Hampshire (EE.UU.).