Optical Calcite (Rough)


(Actual as seen)

SIZE:   33 x 17 x 7mm
(1.3 x 0.67 x 0.28 inches)

Only 1 left in stock

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SKU: RSS941 Category:


All of our Minerals & Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity!

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.


ACTUAL AS SEENThe image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.


Additional information


(Actual as seen)




clear, white


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