Calcite, var. Iceland Spar
Corumba, Mato Grosso do Sul, Brazil
A light yellow, fairly clear orthorhombic calcite. It displays the property of double refraction, where one line appears as two when viewed through the stone.
The measurements below are from face to face rather than from corner to corner. The maximum corner to corner dimension is 2.4 inches.
1.5 x 1.5 x 1.4 inches
3.8 x 3.8 x 3.6 cm
Item 21118