gemstone

Tsavorite Garnet

Grossular Garnet, Ca3Al2(SiO4)3

Hardness: 6.5-7.5 on the Mohs scale; Color: Vibrant green to emerald green; Luster: Vitreous to resinous; Crystal System: Isometric (cubic); Cleavage: None, exhibits distinct parting.

Hardness: 6
Color: Vibrant green to emerald green
Luster: Vitreous to resinous

Identified August 1, 2026More gemstone →

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Physical properties

Hardness: 6.5-7.5 on the Mohs scale; Color: Vibrant green to emerald green; Luster: Vitreous to resinous; Crystal System: Isometric (cubic); Cleavage: None, exhibits distinct parting.

Formation & geological history

Formed through regional metamorphism of impure calcareous sediments or limestones, typically found in high-grade metamorphic terrains such as the Mozambique Belt in East Africa, with ages dating back to the Neoproterozoic era.

Uses & applications

Primarily used as a high-end gemstone in fine jewelry, including rings, necklaces, and earrings, as well as a sought-after specimen for mineral collectors.

Geological facts

Tsavorite was first discovered in Tanzania in 1967 by British prospector Campbell Bridges and was later named after the famous Tsavo National Park in Kenya. It is prized for its vivid color and high brilliance, often rivaling emerald.

Field identification & locations

Identified in the field by its characteristic green color, isometric crystal habit (when crystal faces are visible), lack of cleavage, and high refractive index giving it strong brilliance. Common locations include East Africa (Kenya and Tanzania).