Cube calcite crystals typically form in a rhombohedral shape, but they can also present as cubic or other geometric forms due to their perfect cleavage in three directions at 120 degrees. This cleavage allows calcite to break into shapes that appear cubic. Cube calcite is often transparent or translucent and can be colorless or display a variety of colors depending on impurities. Iceland spar, in particular, is known for its exceptional clarity and transparency. Cube calcite, especially in its clear form known as Iceland spar, is a fascinating mineral that continues to intrigue scientists, collectors, and enthusiasts with its unique properties and historical significance. Approximate Dimension including stand Height: 18 cm Width : 6 cm > THE WEIGHT MENTIONED IS INCLUDING PACKING MATERIAL. THE SHIPPING -The item will be sent with a Track & Trace code via DHL Parcel, DPD or postNl. The tracking will be updated in your Catawiki lot once your parcel has been dropped off. -Please check regularly to avoid your parcel being returned to us, in which case the buyer will be responsible for the shipping costs of the 2nd shipment. -For tracking to Spain and Portugal please use this link and add the tracking number from your Catawiki lot https://clientesparcel.dhl.es/LiveTracking/Home -WE DO NOT COMBINE SHIPPING!!! -If you have any questions about your parcel please contact us using the Catawiki message service. We will try to reply within 3 working days.