Credit:
Gregory Phillips
Labradorite ((
Ca,
Na)(
Al,
Si)4
O8) is a
feldspar
mineral of the
plagioclase series. Here, a piece of labradorite displays a typical
iridescence, termed labradorescence, caused by the
refraction of light within the crystal.
Gemstone varieties of labradorite exhibit high degrees of iridescence, and are called
spectrolites,
moonstones or
sunstones.
Credit:
Gregory Phillips
Labradorite ((
Ca,
Na)(
Al,
Si)4
O8) is a
feldspar
mineral of the
plagioclase series. Here, a piece of labradorite displays a typical
iridescence, termed labradorescence, caused by the
refraction of light within the crystal.
Gemstone varieties of labradorite exhibit high degrees of iridescence, and are called
spectrolites,
moonstones or
sunstones.