Calcite

Sandwiched between  two very this shards of manganese rich matrix rests this gorgeous water clear heart twin. Highly reactive to LW (orange).  Very rare to find a KMF heart twin in the market. Acquired on my trip to Namibia in 2006 from the Ex mine foreman of the Wessels, Peiter Debruyn. Ex Geoffrey Krasnov collection

Locality: Nchwaning 2 Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa

Composition: calcium carbonate