Imperial Topaz (A variety of topaz of orange, pinkish colours.)
Imperial Topaz
6.02 carats
© johndyergems.com
Some Imperial Topaz stones can fade on exposure to sunlight for an extended period of time.
Imperial Topaz 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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Imperial Topaz Gemstones by Size
This table shows distribution of Imperial Topaz 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:1.55 cts
Heaviest:159.14 cts
Average:17.54 cts
Total photos:21
Do you have a larger Imperial Topaz? Why not upload a photo?
| General Information | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Topaz | |||||||||||||
| Physical Properties of Imperial Topaz | ||||||||||||||
| Mohs Hardness | 8, Gemstones of the world (2001) | |||||||||||||
| Specific Gravity | 3.49 to 3.57, Gemstones of the world (2001) | |||||||||||||
| Cleavage Quality | Perfect, Gemstones of the world (2001) | |||||||||||||
| Fracture | Uneven,Conchoidal, Gemstones of the world (2001) | |||||||||||||
| Optical Properties of Imperial Topaz | ||||||||||||||
| Refractive Index | 1.609 to 1.643, Gemstones of the world (2001) | |||||||||||||
| Birefringence | 0.008 to 0.016, Gemstones of the world (2001) | |||||||||||||
| Pleochroism | Yellow: definite - lemon-honey, straw-yellow; Red: strong - dark red, yellow, pink-red, Gemstones of the world (2001) | |||||||||||||
| Dispersion | 0.014, Gemstones of the world (2001) | |||||||||||||
| Colour | ||||||||||||||
| Colour (General) | Orange, pink, red, lavender pink and peach pink, gemdat.org (2012) | |||||||||||||
| Transparency | Transparent,Translucent, Gemstones of the world (2001) | |||||||||||||
| Fluorescence & other light emissions | ||||||||||||||
| Fluorescence (General) | Pink: weak - brown; Red: weak - yellow-brown; Yellow: weak - orange-yellow, Gemstones of the world (2001) | |||||||||||||
| Crystallography of Imperial Topaz | ||||||||||||||
| Crystal System | Orthorhombic, Gemstones of the world (2001) | |||||||||||||
| Habit | Prismatic, Gemstones of the world (2001) | |||||||||||||
| Further Information | ||||||||||||||
| Mineral information: | Imperial Topaz information at mindat.org | |||||||||||||
| Significant Gem Localities | ||||||||||||||
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