Tsavorite - chromiferous variety of Grossular. Garnet Group.
 
 
From: Merelani Hills, Simanjiro, Manyara, Tanzania.
 
 
Translucent anhedric to sub-euhedral crystal of Tsavorite, light green color and vitreous luster, with fine black lamellae of Graphite. Sample with aprox. 1-2cm.