Optical Calcite Spheres, Iceland Spar

Amazing optical calcite spheres with countless rainbows and layers visible from every angle. Not a common crystal to see, especially in sphere form, and a great addition to your collection. Because calcite is a very soft material coming in at a 3-3.5 on the mohs hardness scale, please use caution when placing next to other crystals as they scratch easily. These are very fragile in nature so please use care when handling. Spheres A and C have been discounted due to a scratch on the surface. By purchasing you are acknowledging the flaws. Each sphere is approximately 40mm in diameter and approximately 100 grams.