Large Clear Optical Calcite


Large Clear Optical Calcite | Iceland Spar | Rainbow Calcite | Optical Calcite | Crystal Prism | Refracting Crystal | Reiki | Healing Crystal

This listing is for one (1) Large, Clear Calcite a.k.a. Iceland Spar. Very clear piece clear, and riddled with rainbows.åÊ

Weight: 3.8oz /110g
Dimensions: 38.1mm x 38.1mm x 38.1mm

Please note that the weight is precise but due to the irregular shape of the crystal, measurements are as close to accurate as possible.

Giving this as a gift? We'd be happy to include a handwritten note with your message at no extra charge (please type message in the "Notes" section while checking out).

If we're currently sold out, have no fear as we re-stock frequently. Please send us a note and we'll let you know when they're available.

Please see our other Clear and Honey Optical Calcite here...

Please visit my shop to see other beautiful, hand-selected healing crystals, stones and wonderful pieces...

Please feel free to reach out if you have questions or would like additional photos.


An interesting story about Optical Calcite and the Vikings...

From the Live Science Website (see link below for more info)... Before the invention of the magnetic compass, navigating with a sundial would have been difficult, particularly on overcast days. Ancient Viking lore suggests that they had a magical tool to find the sun, even when the star was hidden.

Researchers have now discovered the crystal that would have made such a magical apparatus possible. The Vikings could have used a common calcite crystal, called an Icelandic spar, to find the sun in the high latitudes where they would have had to battle long twilights and cloudy skies to navigate. This special "sunstone" could find the direction of the sun even when it was out of view because it plays a trick with the light.

"The Vikings could have discovered this, simply by choosing a transparent crystal and looking through it through a small hole in a screen," study researcher Guy Ropars wrote in an email to LiveScience. "The understanding of the complete mechanism and the knowledge of the polarization of light is not necessary."

See more info from Live Science at:

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SGMC Item No. 8100.1

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