Iceland Spar is one name for the optically clear variety of calcite, also known as "optical" calcite. The rhombus shape is a cleavage piece of this mineral. This specimen is from Chihuahua, Mexico
Small Cabinet Specimen: about 3.5" x 1.2" x 2.8" (90mm x 30mm x 70mm).
If you would like to pick this item up at our store front, please select "pick up" during checkout.
If your delicate specimen is over 70lbs we will refer you to our local Crating company for safer freight shipping!
*At customer expense.