Padparadscha Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 |  |  |
 |
 |
Padparadscha Gemstones by Size
This table shows distribution of Padparadscha 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:1.04 cts
Heaviest:3.11 cts
Average:1.71 cts
Total photos:5
Do you have a larger Padparadscha? Why not upload a photo?
Significant stones
Unnamed Padparadschah47 cts
| General Information | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Sapphire, which is a variety of Corundum | ||||||||||
| Chemical Formula |
| ||||||||||
| Significant stones | |||||||||||
| |||||||||||
| Padparadscha Treatments | |||||||||||
| Routinely produced by beryllium diffusion: usually shows a yellow-orangy rim - pink core when immersed. Once produced by irradiation of pink sapphire: color fading permanently if heated - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p.2 | |||||||||||
| Physical Properties of Padparadscha | |||||||||||
| Mohs Hardness | 9, Blue Chart Gem Identification (2010) | ||||||||||
| Specific Gravity | 3.95 to 4.10, Blue Chart Gem Identification (2010) | ||||||||||
| Optical Properties of Padparadscha | |||||||||||
| Refractive Index | 1.757 to 1.780, Blue Chart Gem Identification (2010) | ||||||||||
| Optical Character | Uniaxial/-, Gemmological Tables (2004) | ||||||||||
| Birefringence | 0.007 to 0.010, Gemmological Tables (2004) | ||||||||||
| Colour | |||||||||||
| Colour (General) | Pink-orange, Gemmological Tables (2004) | ||||||||||
| Causes of Colour | Orangy pink, Cr3+ in octahedral coordination and color centers, Cr4+ in octahedral coordination due to Cr4+ and Mg2+ substituting for Al3+ in the crystal structure., Pragmatic Spectroscopy For Gemologists (2011) | ||||||||||
| Transparency | Transparent,Translucent,Opaque, Gemmological Tables (2004) | ||||||||||
| Fluorescence & other light emissions | |||||||||||
| Fluorescence (Long-Wave UV) | If present, a homogeneous orange fluorescence with indication of high heat-treatment suggest a beryllium diffusion treatment., Blue Chart Gem Identification (2010) | ||||||||||
| Crystallography of Padparadscha | |||||||||||
| Crystal System | Trigonal, Gemmological Tables (2004) | ||||||||||
| Further Information | |||||||||||
| Mineral information: | Padparadscha information at mindat.org | ||||||||||
| Significant Gem Localities | |||||||||||
| |||||||||||
