Lazulite Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 |
 |  |  |  |  |  |
 |
Lazulite Gemstones by Size
This table shows distribution of Lazulite 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:0.07 cts
Heaviest:2.41 cts
Average:0.69 cts
Total photos:8
Do you have a larger Lazulite? Why not upload a photo?
| General Information | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chemical Formula |
| |||||||||||||||||
| Physical Properties of Lazulite | ||||||||||||||||||
| Mohs Hardness | 5 to 6, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Specific Gravity | 3.05 to 3.17, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Cleavage Quality | Distinct, Gemstones (2009) | |||||||||||||||||
| Fracture | Uneven, Gemstones (2009) | |||||||||||||||||
| Optical Properties of Lazulite | ||||||||||||||||||
| Refractive Index | 1.604 to 1.646, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Optical Character | Biaxial/-, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Birefringence | 0.032 to 0.034, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Pleochroism | Transparent crystals show a strong pleochroism: colorless - light blue - dark (violet) blue, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Dispersion | 0.014, Gemstones (2009) | |||||||||||||||||
| Colour | ||||||||||||||||||
| Colour (General) | Blue, green, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Causes of Colour | Blue, Fe2+-O-Fe3+ charge transfer, Pragmatic Spectroscopy For Gemologists (2011) | |||||||||||||||||
| Transparency | Transparent,Translucent,Opaque, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Lustre | Vitreous, Gemstones (2009) | |||||||||||||||||
| Fluorescence & other light emissions | ||||||||||||||||||
| Fluorescence (General) | Inert, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Crystallography of Lazulite | ||||||||||||||||||
| Crystal System | Monoclinic, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Habit | Stubby to acute dipyramidal crystals, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Geological Environment | ||||||||||||||||||
| Where found: | Occurs in granite pegmatites and in quartzites, Gems, Sixth Edition (2006) | |||||||||||||||||
| Further Information | ||||||||||||||||||
| Mineral information: | Lazulite information at mindat.org | |||||||||||||||||
| Significant Gem Localities | ||||||||||||||||||
| ||||||||||||||||||