Pyrope-Spessartine

Big Photo

Tanzania
0.71 carats
© gemselect.com

Pyrope-Spessartine is a Garnet intermediate in composition between Pyrope (magnesium aluminium garnet) and Spessartine (manganese aluminium garnet).

Pyrope-Spessartine presents a colour change under different sources of light.

Pyrope-Spessartine Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
 
 
 
 
 
 

Pyrope-Spessartine Gemstones by Size

This table shows distribution of Pyrope-Spessartine 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:0.71 cts
Heaviest:1.5 cts
Average:1.05 cts
Total photos:38
Do you have a larger Pyrope-Spessartine? Why not upload a photo?
0.71ct to 0.79ct0.79ct to 0.87ct0.87ct to 0.95ct0.95ct to 1.03ct1.03ct to 1.11ct1.11ct to 1.18ct1.18ct to 1.26ct1.26ct to 1.34ct1.34ct to 1.42ct1.42ct to 1.50ct
General Information
A variety or type of:Garnet Group
Varieties/Types:
Umbalite - A light pink to purple pyrope, originally from the Umba River, Tanzania.
Chemical Formula
Mg
 
3
Al
 
2
(SiO
 
4
)
 
3
-Mn
2+
3
Al
 
2
(SiO
 
4
)
 
3
Gemdat.org, Management Team (2012)
Photos of natural/un-cut material from mindat.org
Physical Properties of Pyrope-Spessartine
Mohs Hardness7 to 7.5
Gemdat.org, Management Team (2012)
Specific Gravity3.62 to 4.33
Gemdat.org, Management Team (2012)
TenacityBrittle
Gemdat.org, Management Team (2012)
Cleavage QualityNone
Gemdat.org, Management Team (2012)
FractureUneven,Conchoidal
Gemdat.org, Management Team (2012)
Optical Properties of Pyrope-Spessartine
Refractive Index1.730 to 1.820
Gemdat.org, Management Team (2012)
Optical CharacterIsotropic
Gemdat.org, Management Team (2012)
Dispersion0.022 to 0.027
Gemdat.org, Management Team (2012)
Colour
TransparencyTransparent
Gemdat.org, Management Team (2012)
LustreVitreous
Gemdat.org, Management Team (2012)
Crystallography of Pyrope-Spessartine
Crystal SystemIsometric
Gemdat.org, Management Team (2012)
Further Information
Mineral information:Pyrope-Spessartine information at mindat.org
Significant Gem Localities
Tanzania
 
Copyright © Jolyon & Katya Ralph 1993-2019. Site Map. Locality, gem & photograph data are the copyright of the individuals who submitted them. For more information please contact the . Gemdat.org is an online information resource dedicated to providing free gemmological information to all.