Calcite 
 
Locality:  Daye Co., Hubei, China

Size: 132 mm x 92 mm
 
A beautiful display specimen of this clear Calcite cluster with light orange/red Hematite inclusions which in some crystals form little phantoms.
 
Calcite is a carbonate mineral and a polymorph of Aragonite. It is extremely variable in colour, ranging from clear, white, yellow, orange, blue, pink, red, brown, green, black and grey.