A stunning specimen with a cave-shaped matrix, consisting of numerous hour-glass shaped Calcite microcrystals. And now we have both,- several desired, black Baryte crystal from outside, and rather gemmy, colourless and water-clear Baryte crystals, snugly perched inside the "cave". Both types are superbly defined, highly lustrous and excellent terminated. Exceedingly rare and desired material and practically not seen for sale in such a great quality. A super aesthetic oddity and much better in person.
Plumosite & Calcite