Gem Education

Specifications

Origin:
Kenya and Tanzania
Color:
Light Yellowish Green to Deep Grassy Green
Species:
Garnet
Refractive Index:
1.740
Birefringence:
None, garnets are singly refractive.
Specific Gravity:
3.61
Hardness:
7 to 7.5 on Mohs Scale
Birthstone Month:
January
Anniversary Year:
2nd

Tsavorite

Vividly brilliant green. The green colors found in tsavorite garnet are beautiful and highly desirable. Tsavorite Garnet was discovered by British gem prospector Campbell R. Bridges in the mountains of north-east Tanzania in 1967. The name tsavorite was chosen by Tiffany & Co in reference to the initial discoveries in the area in and around Tsavo National Park.

A member of the garnet group, the species name is grossularite and the variety name is tsavorite. Tsavorite is considered to be the most valued variety of the grossularite species because stones over five carats in size are especially rare. For this reason, Tsavorite Garnet gemstones of two carats or more are particularly coveted and surprisingly valuable.

Although tsavorite is the name usually associated with the darker green garnets, there is no universally accepted standard that designates which shade of green qualifies a stone as tsavorite. A great characteristic of tsavorite is its durability, with a hardness similar to Emerald, 7.5 on the Mohs' Scale, it is far less sensitive in its handling.