You are purchasing the exact item described and pictured. As a natural product, irregularities in form and condition may occur, which should not be considered as defects. Therefore, we strongly recommend carefully reviewing the provided images!
Name:
Common name:
Sphalerit → black-jack, ruby jack, zinc blende
Crystal system:
Calcite → trigonal
Sphalerite → cubic
Chemical composition:
Calcite → Calcium, Carbon, Oxygen
Sphalerite → Iron, Sulfur, Zinc
Location:
Dalnegorsk, Primorsky Krai / Russia
Size of the mineral:
Length: 12 cm
Width: 11 cm
Height: 4 cm
Weight:
Large calcite crystals on black zinc blende.