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Viking Sunstone found in ship wreckage!  Calcite crystals like Icelandic Spar create a double image, splitting light into two rays. If the crystal is held east-west, the double image becomes a single image and thus allows a sailor to locate the sun. The crystal's refractive qualities continue to be useful even in low light, on a cloudy day, or for a while after the sun has set.

Viking Sunstone found in ship wreckage! Calcite crystals like Icelandic Spar create a double image, splitting light into two rays. If the crystal is held east-west, the double image becomes a single image and thus allows a sailor to locate the sun. The crystal's refractive qualities continue to be useful even in low light, on a cloudy day, or for a while after the sun has set.

Compass Vegvisir

Compass Vegvisir

Galaxy opal

Galaxy opal

ancient runes, Norway 15th C.

ancient runes, Norway 15th C.

Bloodshot Iolite. Known as the gemstone of the Vikings, Iolite was used by Norse and Viking explorers as a navigational aid, as a properly oriented stone would change color in relation to the direction of sunlight, allowing for crude navigation in the fog- enshrouded northern Atlantic waters where the direction of the sun was otherwise impossible to discern.

Bloodshot Iolite. Known as the gemstone of the Vikings, Iolite was used by Norse and Viking explorers as a navigational aid, as a properly oriented stone would change color in relation to the direction of sunlight, allowing for crude navigation in the fog- enshrouded northern Atlantic waters where the direction of the sun was otherwise impossible to discern.

Vikings' crystal clear method of navigation - image 2 - life - 31 January 2011 - New Scientist

Vikings' crystal clear method of navigation - image 2 - life - 31 January 2011 - New Scientist

dd_0203.jpg

dd_0203.jpg

Amethyst Carving of a Kitten Alfred Zimmerman Idar-Oberstein, Germany  Depicting a kitten grooming his leg, carved from a single large crystal of fine transparent violet amethyst, realistically textured to suggest the fur. Weighing approximately 1135 carats. Length 3 1/4 in.

Amethyst Carving of a Kitten Alfred Zimmerman Idar-Oberstein, Germany Depicting a kitten grooming his leg, carved from a single large crystal of fine transparent violet amethyst, realistically textured to suggest the fur. Weighing approximately 1135 carats. Length 3 1/4 in.

Dendritic Agate Cabochon

Dendritic Agate Cabochon

Medieval Hair Comb

Medieval Hair Comb

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