Tsavorite

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Tsavorite Garnet Radiant Style Cut
11.01 carats
© johndyergems.com

Green to emerald green variety from Kenya and Tanzania; discovered in the early 1970s. It takes its name from Tsavo area in Kenya.

Tsavorite Gemstones by Colour

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

Tsavorite Gemstones by Size

This table shows distribution of Tsavorite 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:0.06 cts
Heaviest:11.01 cts
Average:1.68 cts
Total photos:43
Do you have a larger Tsavorite? Why not upload a photo?
0.06ct to 1.16ct1.16ct to 2.25ct2.25ct to 3.35ct3.35ct to 4.44ct4.44ct to 5.54ct5.54ct to 6.63ct6.63ct to 7.73ct7.73ct to 8.82ct8.82ct to 9.92ct9.92ct to 11.01ct
General Information
A variety or type of:Grossular, which is a variety of Garnet Group
Photos of natural/un-cut material from mindat.org
Physical Properties of Tsavorite
Mohs Hardness7 to 7.5
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Specific Gravity3.55 to 3.73
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Optical Properties of Tsavorite
Refractive Index1.735 to 1.744
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Optical CharacterIsotropic
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Anomalous double refraction
Colour
Colour (General)Emerald green
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Colour (Chelsea Filter)May appear pinkish-red if chromium-rich
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Causes of ColourGreen, V3+ in octahedral coordination.
W. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011)
Fluorescence & other light emissions
Fluorescence (General)Inert
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Crystallography of Tsavorite
Crystal SystemIsometric
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Inclusions in Tsavorite
Rows or "feathers" of tiny negative crystals, fluid inclusions, asbestos fibers -Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p. 3
Further Information
Mineral information:Tsavorite information at mindat.org
Significant Gem Localities
Kenya
 
  • Taita-Taveta County
      • Tsavo National Park
Keller (1992)
  • Turkana County
    • Lodwar
Barot (1993)
Madagascar
 
  • Atsimo-Andrefana
    • Ampanihy
Laurs (2003)
Tanzania
 
  • Manyara Region
    • Simanjiro District
Pardieu (2007)
Pardieu (2007)
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.