Spectrolite

Spectrolite is a less common variety of labradorite feldspar. Spectrolite exhibits a richer range of colours than labradorite (that shows only tones of blue-grey-green) and high labradoresence. Spectrolite was initially a brand name for material mined in Finland, but is sometimes incorrectly used to describe labradorite whenever a richer display o...
Found on http://en.wikipedia.org/wiki/Spectrolite

Spectrolite

The spectrolite is a variety feldspar, a mineral used in creating decorative art and is similar in look to opals in the way the colours shimmer. The spectrolite has a rich and beautiful play of colours ranging from blue to red and yellow.
Found on https://www.encyclo.co.uk/local/22607
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