Amazonite
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A blue-green to turquoise variety of microcline feldspar, amazonite takes its color from trace lead and water held in the crystal lattice rather than from any Amazonian source, as its name misleadingly implies. The finest gem material has come from Colorado, Russia, and more recently Ethiopia and Madagascar. It crystallizes in the triclinic system and registers 6.0 to 6.5 on the Mohs scale, a modest hardness better suited to cabochons and carvings than to faceting. Bold opaque color and grid-like white streaks of perthite give the stone its recognizable look, and it remains a widely used semi-precious material in the moderate range.
Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6,0 – 6,5
Specific Gravity
2,55 – 2,57
Refractive Index
1,522 – 1,53
Crystal System
Triclinic
Luster
Vitreous
Cleavage
Perfect
Fracture
Uneven,Conchoidal
Color
various
Birefringence
0,008
Pleochroism
Weak
Mohs Hardness
| Mohs | Reference mineral | Amazonite |
|---|---|---|
| 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 Amazonite
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
6 to 6.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
2.55 to 2.57Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
BrittleWalter Schumann, Gemstones of the world (2001)
PerfectMichael O?Donoghue, Gems, Sixth Edition (2006)
Uneven,ConchoidalMichael O?Donoghue, Gems, Sixth Edition (2006)
1.522 to 1.530Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Biaxial/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
0.008 to 0.010Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
WeakMichael O?Donoghue, Gems, Sixth Edition (2006)
WeakMichael O?Donoghue, Gems, Sixth Edition (2006)
Green, blue-greenUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references
Translucent,OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Opaque with white grid-like pattern, rarely translucentMore from other references
VitreousWalter Schumann, Gemstones of the world (2001)
Weak; olive-greenWalter Schumann, Gemstones of the world (2001)
Possible yellow-greenHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
TriclinicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
PrismaticWalter Schumann, Gemstones of the world (2001)
Amazonite information at mindat.org
Madagascar
Madagascar, extraLapis English No.1, 2001, p. 43
Myanmar
Ted Themelis (2008) Gems & mines of Mogok
Peru
About Amazonite
A amazonite é uma variedade de feldspato microclina de coloração verde-azulada característica, que varia do verde-menta ao verde-azul turquesa. O seu nome é frequentemente associado ao Rio Amazonas, embora os depósitos comercialmente significativos não se encontrem nessa região. A sua cor distinta resulta da presença de traços de chumbo e água na sua estrutura cristalina. Conhecida e utilizada desde o Antigo Egipto, onde era empregue em joalharia e objectos decorativos, a amazonite foi encontrada na tumba de Tutankamon. Actualmente é popular em joalharia contemporânea e como pedra decorativa.
On this page
Jewelry Use
Durability
5/10
Science FYI Family
Frequently Asked Questions
What is Amazonite?
A amazonite é uma variedade de feldspato microclina de coloração verde-azulada característica, que varia do verde-menta ao verde-azul turquesa. O seu nome é frequentemente associado ao Rio Amazonas, embora os depósitos comercialmente significativos não se encontrem nessa região. A sua cor distinta r
What is the hardness of Amazonite?
Amazonite has a Mohs hardness of 6.0 to 6.5, making it moderate for use in jewelry.
What color is Amazonite?
Amazonite is primarily Various.
How much does Amazonite cost?
Amazonite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Amazonite?
Amazonite belongs to the Triclinic crystal system.