Excellent not often seen specimen of Salammoniac crystals from Katerina Coal Mine, Czech Republic.  It comes from the collection of Sandro Maggia, Italy with a label. Natural crystals of the ammonium chloride Salammoniac are quite rare in nature. It displays aesthetic dendritic structure of crystals. They are well shaped and translucent to transparent. At the base part they are colorless till at the top they have attractive yellow color. The Salammoniac is water soluble and must be stored in low humidity air condition. Displays all over 360 degree. In superb condition.

Fantastic!