Phenakite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7,5 – 8,0
Specific Gravity
2,9 – 2,98
Refractive Index
1,65 – 1,695
Crystal System
Trigonal
Luster
Vitreous
Fracture
Conchoidal
Color
various
Birefringence
0,016
Dispersion
0,015
Pleochroism
Distinct: colorless - orangy-yellow
Mohs Hardness
| Mohs | Reference mineral | Phenakite |
|---|---|---|
| 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 Phenakite
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
Colorless material has been reported to turn a yellow-brown color on irradiation (Pough and Rogers, 1947). One could expect this change to be reversed by heating - Nassau (1984)
7.5 to 8Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
2.90 to 2.98Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
BrittleArthur Thomas, Gemstones (2009)
GoodWalter Schumann, Gemstones of the world (2001) More from other references
ConchoidalWalter Schumann, Gemstones of the world (2001)
1.650 to 1.695Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Uniaxial/+Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
0.016Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Distinct: colorless - orangy-yellowHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
0.015Arthur Thomas, Gemstones (2009)
Colourless, yellowish, pink, greenish blueUlrich 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)
Inert to weak greenish, blue, pinkHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Specimens show a distinct blueMichael O?Donoghue, Gems, Sixth Edition (2006)
TrigonalHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Rhombohedral, tabular to prismatic crystalsMichael O?Donoghue, Gems, Sixth Edition (2006) More from other references
Phenakite occurs in granite pegmatites.Michael O?Donoghue, Gems, Sixth Edition (2006) More from other references
(Veils of) 2-phase inclusions, rutile needles - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 4
Phenakite information at mindat.org
Austria
France
Myanmar
Russia
Sri Lanka
USA
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 437
About Phenakite
Fenaquita é um mineral de silicato de berílio com dureza excepcional de 7,5 a 8 na escala Mohs e brilho adamantino que rivalizou com o diamante antes da sua identificação correcta. De facto, o nome deriva do grego para enganador, pois foi frequentemente confundida com diamante. Transparente a incolor com brilho vítreo a adamantino, produz gemas de alta qualidade quando talhada. Os melhores cristais provêm do Brasil, Rússia, Mianmar e Colorado. Embora relativamente rara como gema facetada, a fenaquita de qualidade superior é muito valorizada por colecionadores que apreciam gemas de alta dureza e brilho excepcional.
On this page
Jewelry Use
Durability
8/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Phenakite?
Fenaquita é um mineral de silicato de berílio com dureza excepcional de 7,5 a 8 na escala Mohs e brilho adamantino que rivalizou com o diamante antes da sua identificação correcta. De facto, o nome deriva do grego para enganador, pois foi frequentemente confundida com diamante. Transparente a incolo
What is the hardness of Phenakite?
Phenakite has a Mohs hardness of 7.5 to 8.0, making it excellent for use in jewelry.
What color is Phenakite?
Phenakite is primarily Various.
How much does Phenakite cost?
Phenakite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Phenakite?
Phenakite belongs to the Trigonal crystal system.