TWO SOLID CHUNKS OF GEM CHALCEDONY VIVIDLY COLORED BY MANGANOAN SUGILITE. Very rare stuff.:) This material came from the Wessels Mine near Hotazel in the Kuruman district, Cape Province, Republic of South Africa. It was part of the original 24000 pound discovery made in 1980, by S.A. Manganese Armcor, Limited, of Johannesburg.