Icelandic Spar (Optical Calcite) Brazil A

SPATH-B-01
Origin: Brazil
Grade: A

Dimensions:
About 20-30mm

Weight:
Between 10 and 20g

Origin:
Brazil (PANTANAL)

Grade:
A = good

Icelandic spar (optical calcite) from Brazil approximately 20-30mm
Sold individually.
Colors and shapes may vary from one stone to another

Icelandic spar is a transparent variety of calcite.
It is also called Optical Calcite because of its specificity of double refraction.
According to the hypothesis of some researchers, it is a crystal of this type which could have been used as a sunstone by the Vikings.