Calcite Optical [Rough]

£3.00

(May differ to photo)

SIZE: 30-60mm (Range)

Only 236 left in stock

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SKU: RS0941 Categories: ,

Description

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 (unrough) translucent piece of calcite crystal is placed over a word on a page it will reveal two distinct images of that word through the mineral.

MAY DIFFER TO PHOTOThe image shows an example of the single specimen you will receive. This will be picked from our stock box graded and with a size approximately within the size range indicated. It will not be the same specimen shown in the photo, the colours, shape, size and style may vary as with any natural item. To guarantee the specimen you receive will be representative by that in photo, we would always recommend the Actual as seen version of this item.

Additional information

Unique

(May differ to photo)

Origin

Mexico

Colour

clear

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