Optical Calcite (Rough) – UK Healing Crystal Mineral Stone, Authentic

All of our Minerals & Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity!
Specimen: Optical Calcite
Type: Mineral/Crystal
Location: UK

Size (picture scale cube=1cm):  30 x 22 x 44mm (1.18 x 0.87 x 1.73 inches)
Calcite, also known as Iceland Spar, is a carbonate mineral and the most stable polymorph of calcium carbonate. Calcite is a common constituent of sedimentary rocks, limestone in particular, much of which is formed from the shells of dead marine organisms. Approximately 10% of sedimentary rock is limestone.
Calcite is a widely used material in optics because of its birefringence. This means that when a polished translucent (unrough) piece of calcite crystal is placed over a word on a page it will reveal two distinct images of that word through the mineral.

**The items image shows the ACTUAL specimen you will receive**
**NB: This items picture will change once we update the listing after this specific item has been sold, this action may cause the picture in your purchase history to also change to the new image! We would suggest saving/screenshotting the item image as soon as purchased for your own records of comparison for once the item has been received in the post. We also keep a record of every image we upload**

**Safety Caution**
Some Minerals and Crystals can contain natural traces of toxic compounds, after all, minerals are natural ores and used widely for the extraction of chemicals and compounds. For your safety, we suggest you fully research the Minerals & Crystals you wish to purchase before placing an order for the items. We also recommend ensuring you wash your hands thoroughly after handling such specimens. Most Minerals and Crystals are safe in their solid state, yet some can be hazardous if broken down, so we strongly advise against grounding, crushing or breaking of the specimens purchased from our website.