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Multi-colored gems are superimposed on an image of glacier peaks.
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Gems and Minerals from the Sub-Arctic

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

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Three pieces of labradorite with yellow, blue and green flashes of color.
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Optical Effects of Phenomenal Cabochons

Learn how the structure, inclusions and properties of some gemstones interact with light to create unusual visual effects.

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