Fire Agate
Mexico
8.52 carats
© gemselect.com
Fire Agate 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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Fire Agate Gemstones by Size
This table shows distribution of Fire Agate 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:1.47 cts
Heaviest:17.67 cts
Average:8.11 cts
Total photos:27
Do you have a larger Fire Agate? Why not upload a photo?
| General Information | ||||||
|---|---|---|---|---|---|---|
| A variety or type of: | Chalcedony, which is a variety of Quartz | |||||
| Chemical Formula |
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| Physical Properties of Fire Agate | ||||||
| Mohs Hardness | 6.5 to 7, Management Team (2012) | |||||
| Specific Gravity | 2.60 to 2.64, Gemstones of the world (2001) More from other references | |||||
| Cleavage Quality | None, Gemstones of the world (2001) | |||||
| Fracture | Uneven, Gemstones of the world (2001) | |||||
| Optical Properties of Fire Agate | ||||||
| Refractive Index | 1.530 to 1.543, Blue Chart Gem Identification (2010) | |||||
| Optical Character | Uniaxial/+, Gemmological Tables (2004) | |||||
| Birefringence | 0.003 to 0.009, Blue Chart Gem Identification (2010) | |||||
| Pleochroism | Absent, Gemstones of the world (2001) | |||||
| Dispersion | None, Gemstones of the world (2001) | |||||
| Colour | ||||||
| Colour (General) | Brown, red to orange, Management Team (2012) | |||||
| Causes of Colour | Inclusions of goethite or limonite, producing an iridescent effect or "fire.", Management Team (2012) | |||||
| Transparency | Translucent,Opaque, Gemstones of the world (2001) More from other references | |||||
| Lustre | Vitreous,Waxy, Management Team (2012) | |||||
| Crystallography of Fire Agate | ||||||
| Crystal System | Trigonal, Gemmological Tables (2004) | |||||
| Habit | Microcrystalline aggregates, Gemstones of the world (2001) | |||||
| Inclusions in Fire Agate | ||||||
| Inclusions of goethite or limonite. | ||||||
| Further Information | ||||||
| Mineral information: | Fire Agate information at mindat.org | |||||