Grape Chalcedony - Sulawesi, Indonesia
 
Grape chalcedony with a particularly intense color and luster. The piece stands out among others of its kind for its perfect quality, color and luster. 
A rare (and therefore coveted by collectors) spherical form of chalcedony. The chalcedony is found in the Mamuju (Manakarra) area in the province of West Sulawesi (Celebes) in Indonesia . The chalcedonies are traded under the names "grape chalcedony" or "grape agate", but also manakarra stone.