Labradorite is named for Labrador, Newfoundland in northeast Canada, where the gem was first identified by geologists in the 1770s. In Finland, it is known as spectrolite. Labradorite is a variety of feldspar. Feldspar refers to crystalline aluminosilicate minerals, which are divided into two groups depending on their chemical composition. The potassium types consist of orthoclase, microcline, and others; and the plagioclase types include albite, labradorite and oligoclase. Labradorite falls midway through the series. It is found in igneous and metamorphic rocks and is characteristic of gabbros and basalts. Rarely found as crystals, it is usually uncovered as a compact aggregate.
* Scientific proof may not be available to substantiate these claims.