Phosphophyllite
Bolivia
0.38 carats
© Mineral Classics
Phosphophyllite forms bluish- or sea-green thick tabular crystals, fish-tail twinning is common.
Phosphophyllite is highly valued by collectors for its delicate bluish green colour, but it is seldom cut because it is rare, fragile and brittle.
Phosphophyllite Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
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Phosphophyllite Gemstones by Size
This table shows distribution of Phosphophyllite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:0.38 cts
Heaviest:1.57 cts
Average:0.78 cts
Total photos:3
Do you have a larger Phosphophyllite? Why not upload a photo?
| General Information | ||||||||||||||||||||||||||
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| Chemical Formula |
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| Physical Properties of Phosphophyllite | ||||||||||||||||||||||||||
| Mohs Hardness | 3 to 3.5, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||
| Specific Gravity | 3.07 to 3.13, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||
| Tenacity | Brittle, Blue Chart Gem Identification (2010) | |||||||||||||||||||||||||
| Cleavage Quality | Perfect, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||
| Fracture | Conchoidal, Gemstones (2009) | |||||||||||||||||||||||||
| Optical Properties of Phosphophyllite | ||||||||||||||||||||||||||
| Refractive Index | 1.595 to 1.621, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||
| Optical Character | Biaxial/-, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||
| Birefringence | 0.021, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||
| Pleochroism | Nil, Gemstones (2009) | |||||||||||||||||||||||||
| Dispersion | Very weak, Gemstones (2009) | |||||||||||||||||||||||||
| Colour | ||||||||||||||||||||||||||
| Colour (General) | Colourless, bluish-green, green, Gemmological Tables (2004) More from other references | |||||||||||||||||||||||||
| Causes of Colour | Bluish green, Fe2+, Pragmatic Spectroscopy For Gemologists (2011) | |||||||||||||||||||||||||
| Transparency | Transparent, Gemmological Tables (2004) More from other references | |||||||||||||||||||||||||
| Lustre | Vitreous, Gemstones (2009) | |||||||||||||||||||||||||
| Fluorescence & other light emissions | ||||||||||||||||||||||||||
| Fluorescence (Short Wave UV) | Violet, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||
| Crystallography of Phosphophyllite | ||||||||||||||||||||||||||
| Crystal System | Monoclinic, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||
| Habit | Thick tabular crystals with numerous other forms, fish-tail and penetration twinning, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||||||||||
| Geological Environment | ||||||||||||||||||||||||||
| Where found: | Occurs as a secondary mineral in zoned complex granite pegmatites or as an alteration product of sphalerite, Gems, Sixth Edition (2006) | |||||||||||||||||||||||||
| Further Information | ||||||||||||||||||||||||||
| Mineral information: | Phosphophyllite information at mindat.org | |||||||||||||||||||||||||
| Significant Gem Localities | ||||||||||||||||||||||||||
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