Ammolite
Canada
16.45 carats
© gemselect.com
Ammolite is typically used to create doublets or triplets that are suitable for making durable jewelry.
Ammolite is famous for its remarkably vivid play of colour, caused by lamellar structure of the glass-like shell. It is also called gem ammonite, calcentine, and korite.
Ammolite 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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Ammolite Gemstones by Size
This table shows distribution of Ammolite 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:1.88 cts
Heaviest:24.43 cts
Average:11.61 cts
Total photos:40
Do you have a larger Ammolite? Why not upload a photo?
| General Information | |
|---|---|
| Other Names/Trade Names: | |
| Physical Properties of Ammolite | |
| Mohs Hardness | 4, Gemstones of the world (2001) More from other references |
| Specific Gravity | 2.75 to 2.80, Gemstones of the world (2001) More from other references |
| Optical Properties of Ammolite | |
| Refractive Index | 1.520 to 1.670, Tables of Gemstone Identification (2007) |
| Birefringence | 0.150, Tables of Gemstone Identification (2007) |
| Colour | |
| Colour (General) | Play-of-color - mostly red-green mosaic-like, Blue Chart Gem Identification (2010) |
| Fluorescence & other light emissions | |
| Fluorescence (General) | Common mustard yellow, Blue Chart Gem Identification (2010) |
| Further Information | |
| Mineral information: | Ammolite information at mindat.org |