Adularescence
As adularescence (Verb: adularisation ) is referred to the bluish-white, planar shimmer, predominantly in the gemstone -Varietät of orthoclase (Adularia), the so-called moon stone , occurs. The light reflections seem to run over its surface when the stone is moved and are particularly emphasized by the cabochon cut.
The adularization is generated by the lamellar structure of the moonstone crystal , which forces the incident light rays to interfere , that is, depending on their position, by superimposing them to reinforce or weaken each other.
literature
- Walter Schumann: Precious stones and gemstones. All kinds and varieties. 1900 unique pieces . 16th revised edition. BLV Verlag, Munich 2014, ISBN 978-3-8354-1171-5 , pp. 52 .