| General Information |
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| A variety or type of: | Chalcedony, which is a variety of Quartz |
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| Chemical Formula | Walter Schumann, Gemstones of the world (2001) |
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| Physical Properties of Moss Agate |
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| Mohs Hardness | 6.5 to 7Walter Schumann, Gemstones of the world (2001) |
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| Specific Gravity | 2.58 to 2.64Walter Schumann, Gemstones of the world (2001) |
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| Cleavage Quality | NoneWalter Schumann, Gemstones of the world (2001) |
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| Optical Properties of Moss Agate |
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| Refractive Index | 1.530 to 1.540Walter Schumann, Gemstones of the world (2001) |
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| Birefringence | up to to 0.004Walter Schumann, Gemstones of the world (2001) |
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| Pleochroism | AbsentWalter Schumann, Gemstones of the world (2001) |
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| Dispersion | NoneWalter Schumann, Gemstones of the world (2001) |
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| Colour |
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| Colour (General) | Translucent to white with green veins/streaks.Gemdat.org, Management Team (2012) |
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| Causes of Colour | Colorless with green, brown, or red inclusions.Walter Schumann, Gemstones of the world (2001) More from other references |
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| Transparency | TranslucentWalter Schumann, Gemstones of the world (2001) |
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| Fluorescence & other light emissions |
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| Fluorescence (General) | Variable, cannot be used for a diagnosisWalter Schumann, Gemstones of the world (2001) |
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| Crystallography of Moss Agate |
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| Crystal System | TrigonalWalter Schumann, Gemstones of the world (2001) |
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| Habit | MicrocrystallineWalter Schumann, Gemstones of the world (2001) |
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| Geological Environment |
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| Where found: | It occurs as filler in fissures or as pebbles.Walter Schumann, Gemstones of the world (2001) |
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| Inclusions in Moss Agate |
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| Chlorite, hornblende inclusions in moss-like pattern. - Gemstones of the world, Walter Schumann, 2001, p 130 |
| Further Information |
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| Mineral information: | Moss Agate information at mindat.org |
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