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2. Labradorite - Wikipedia

   en.wikipedia.org/wiki/Labradorite

   Labradorite ( (Ca, Na) (Al, Si) 4 O 8) is a calcium-enriched feldspar mineral first identified in Labrador, Canada, which can display an iridescent effect (schiller). Labradorite is an intermediate to calcic member of the plagioclase series. It has an anorthite percentage (%An) of between 50 and 70. The specific gravity ranges from 2.68 to 2.72.

3. Gemstone Meanings: Power and Significance of the 25 Most ...

   www.aol.com/gemstone-meanings-power-significance...

   Jade. “Long prized across many varied and ancient cultures from ancient China to the Incan and Aztec empires, Jade is a highly valuable gemstone that represents good fortune, luck, and abundance ...

4. Anorthosite - Wikipedia

   en.wikipedia.org/wiki/Anorthosite

   Anorthosite (/ əˈnɔːrθəsaɪt /) is a phaneritic, intrusive igneous rock characterized by its composition: mostly plagioclase feldspar (90–100%), with a minimal mafic component (0–10%). Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most commonly present. Anorthosites are of enormous geologic interest, because it is ...

5. Larvikite - Wikipedia

   en.wikipedia.org/wiki/Larvikite

   Larvikite. Polished larvikite (marketed as "Blue Pearl Granite"), showing labradorescence, is a popular decorative stone. Larvikite is an igneous rock, specifically a variety of monzonite, [1] notable for the presence of thumbnail-sized crystals of feldspar. These feldspars are known as ternary because they contain significant components of all ...

6. Spectrolite - Wikipedia

   en.wikipedia.org/wiki/Spectrolite

   Spectrolite exhibits a richer range of colors than other labradorites as for instance in Canada or Madagascar (which show mostly tones of blue-grey-green) and high labradorescence. [1][2] Due to the unique colors mined in Finland, spectrolite has become a brand name for material mined only there. Sometimes spectrolite is incorrectly used to ...

7. Plagioclase - Wikipedia

   en.wikipedia.org/wiki/Plagioclase

   Labradorite frequently shows an iridescent display of colors due to light refracting within the lamellae of the crystal. [29] It is named after Labrador, where it is a constituent of the intrusive igneous rock anorthosite which is composed almost entirely of plagioclase. [28] A variety of labradorite known as spectrolite is found in Finland ...