Labradorite is plagioclase feldspar with a hardness of 6-6.5. Its name is derived from the Labrador Peninsula in Canada where it was first identified by Moravian missionaries in 1770. The rich display of iridescent color in Labradorite is called “shiller”. The shiller effect is caused by the scattering of light from thin layers of a second feldspar that develops through internal chemical separation during the cooling of what was originally a single feldspar. It is found in Madagascar, Canada, Norway and Mexico. *All of our Labradorite is from Madagascar.
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