Apophyllite Group
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
4,5 – 5,0
Specific Gravity
2,3 – 2,5
Refractive Index
1,53 – 1,543
Crystal System
Tetragonal
Luster
Pearly
Fracture
Uneven
Color
various
Mohs Hardness
| Mohs | Reference mineral | Apophyllite Group |
|---|---|---|
| 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
Budget (< $50/ct)
Where to Buy Apophyllite Group
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 by Plough (1957) to turn green on irradiation. Heat could be expected to reverse this change - Nassau, 1984
4.5 to 5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
2.30 to 2.50Walter Schumann, Gemstones of the world (2001) More from other references
PerfectHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Easy and perfectMore from other references
UnevenArthur Thomas, Gemstones (2009)
1.530 to 1.543Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Uniaxial/+,-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
0.000 to 0.003Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
HighArthur Thomas, Gemstones (2009)
White, colourless, bluish, reddish, yellowish, greenishUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references
Green, V4+ in distorted octahedral coordinationW. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011)
Transparent,Translucent,OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references
PearlyHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Blue-green and yellowArthur Thomas, Gemstones (2009)
TetragonalHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Tabular, prismatic, pseudo-cubicArthur Thomas, Gemstones (2009)
Apophyllite occurs in basalts and granitesMichael O?Donoghue, Gems, Sixth Edition (2006)
Apophyllite Group information at mindat.org
About Apophyllite Group
O grupo da apofillite inclui minerais de filossilicatos que formam cristais piramidais ou tabulares muito característicos, geralmente incolores, brancos ou levemente esverdeados. A variedade fluorapofillite-(K) é a mais comum e apreciada em colecções mineralógicas pela perfeição dos seus cristais tetragonais. Apresenta um lustre perláceo nas faces de clivagem e vítreo nas outras faces. Embora raramente utilizada em joalharia devido à sua fragilidade, é muito apreciada por colecionadores. Forma-se em cavidades de rochas basálticas e em veios hidrotermais, com exemplares notáveis provenientes de Pune, na Índia.
On this page
Jewelry Use
Durability
3/10
Science FYI Family
Frequently Asked Questions
What is Apophyllite Group?
O grupo da apofillite inclui minerais de filossilicatos que formam cristais piramidais ou tabulares muito característicos, geralmente incolores, brancos ou levemente esverdeados. A variedade fluorapofillite-(K) é a mais comum e apreciada em colecções mineralógicas pela perfeição dos seus cristais te
What is the hardness of Apophyllite Group?
Apophyllite Group has a Mohs hardness of 4.5 to 5.0, making it relatively soft for use in jewelry.
What color is Apophyllite Group?
Apophyllite Group is primarily Various.
How much does Apophyllite Group cost?
Apophyllite Group falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Apophyllite Group?
Apophyllite Group belongs to the Tetragonal crystal system.