SCHILLER
Schiller (from the German term for play of colors or glitter) is an iridescent or bronze-like luster occuring in some minerals (it is also referred to as labradorescence when it occurs in feldspars).
Schiller
Also called labradorescence, it is a colorful play of light across the cleavage planes that is displayed in some Minerals. The term labradorescence is derived from the Mineral Labradorite which displays this attribute.
Schiller
The appearance of a floating, billowy light in cabochon gemstones or a stationary sheen on the flat surface of a stone. Seen in certain Feldspars such as Moonstone. Adularescence.
schiller (n) a term meaning "twinkle" in German used to describe iridescence beneath the surface of a stone. Schiller is used more generically than other terms such as adulerescence (which refers to the iridescence in moonstones) or opalescnce (opal).
schiller Color reflections or color "flashes" present in a mineral. The individual color flashes of Opal are known as "schillers".
It may be orange, yellow, colorless, or red, but the material that shows a play of color, or "schiller," is the most popular for use in jewelry. Found in Labrador (Canada), Finland, Norway, and the former USSR.
Sunstone is a variety of Labradorite feldspar that generally shows an opaque "schiller" effect where the metallic inclusions reflect light in a blaze of color. However, it can also come in clear stones which are suitable for faceting.
While standard labradorite has a light green-gray base and moderate play of color (called labradorescence or schiller), spectrolite has a dark or black base and reflects an entire spectrum of colors.
Schiller - An irridescent luster, as in some feldspars (Labradorite)
Schistose - Thinly layered, as in schist rocks.
Sectile - Capable of being cut with a knife (Acanthite) ...
This iridescence is known as schiller but in moonstone it is called adularescence. Clarity ranges from transparent to translucent. Rainbow moonstone is milky white with a rainbow colored sheen.
Valued for its lustrous metallic reflections (called schiller) that are said to resemble a butterfly’s wing, ...
Its importance as a gemstone arises because of its schiller, which in moonstone has been given the name adularescence. This is caused by a feature of its crystal structure.
Heliolite is a variety mined in Oregon with a schiller effect that flashes out red, green, blue and orange; many of these have more than one color in each stone. This variety is generally faceted rather than cut into cabochons.
Moonstone's Adularescence (Schiller Effect)
Moonstone's characteristic blue/white scheen is caused by an optical phenomenon that is referred to as the "schiller effect," "aventurescence" (aka "aventurization"), or "adularescence.
It displays a schiller of light which is caused by inclusions. Schiller is a lustrous reflection from planes in a mineral grain and is similar to what is more commonly known as iridescence.
The floating light phenomenon and sheen within these gemstones is called Adularescence or Schiller.
It displays a schiller of light which is caused by . Amazonite varies from bright verdigris green to a bluish green and is mined in the United States, Brazil, Zimbabwe, Russia, Australia and Namibia.
Generally Sunstone shows a "Schiller" effect where the metallic inclusions reflect light in a blaze of color. Sunstone is metallic in appearance due to the reflective inclusions of red, orange or green crystals.
Moonstone is opalescent, with a blue or white scheen, sometimes called "schiller", resembling moonshine. Composed of albite and orthoclase feldspar, the albite gives it the bluish color.
A variety of quartz spangled with inclusions giving a schiller, an unusual and attractive lustre characteristic of certain minerals. It may be green, blue, red or yellow in colour.
B.A English Literature from Schiller International University, London, UK.
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Labradorite"The butterfly of the feldspars has dazzling blue schiller.
Lazurite"Ancient mineral source of ultramarine pigment.
Magnesite"Magnesium carbonate ore mineral.
A diffuse cloud of small platelike inclusions produces a distinctive, shimmering effect known as schiller. Oregon produces semitransparent to transparent red to green (or bicolored) material ( sunstone , heliolite , or plushstone ).
The Romans thought that moonstone was formed out of moonlight. Moonstone is a variety of feldspar, and the shimmer which is called "schiller" or "adularescence", is caused by the intergrowth of two different types of feldspar, ...
This appealing gem variety does shine with a cool lunar light but it is the mineral feldspar, quite terrestrial in origin. The shimmer, which is called schiller or adularescence, is caused by the intergrowth of two different types of feldspar, ...
Labradorite is the plagioclase feldspar that is most commonly faceted as a gem. It comes in orange, yellow, colourless and red but the material that shows a play of colour, known as 'schiller', is the most popular for use in jewellery.
In sunstone, the labradorite contains millions of copper platelets that reflects the light with varying intensities resulting in a golden-red play of color known as schiller.
a billowy floating light which appears to come from below the surface it is showing adularescence. The name comes from the most prominent gem displaying the phenomenon: moonstone, known historically as "adularia". The term "shiller" or "schiller" is ...
inclusions of copper or hematite platelets exhibit glittering, spangled reflections, shimmering through different depths within the gem
Some experts refer to this phenomenon as aventurescence; others refer to this optical effect as schiller ...
 See also: Stone, Gemstone, Jewel, Color, Feldspar
  
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