Lustre (mineralogy) - Wikipedia, the free encyclopedia
|
|
Lustre (or luster ) is a description of the way light interacts with the surface of a crystal, rock, or mineral. For example, a diamond is said to have an adamantine lustre and pyrite is said to ...
en.wikipedia.org/wiki/Lustre_(mineralogy)
|
|
|
Aventurescence - Topic:Jewelry - Online Encyclopedia ... Aventurescence - The effect caused by small inclusions of a mineral with a highly reflective surface (commonly Hematite, Pyrite, or Goethite) which causes it to exhibit a glistening effect, as if it is pasted with glitter, ...
|
en.mimi.hu/jewelry/aventurescence.html
en.mimi.hu/jewelry/aventurescence.html
|
|
|
|
Occasionally, other gemstones exhibit aventurescence, such as members of the mica group like the lavender colored lepidolite, or rocks containing fuchsite mica. An extremely rare gem, sought avidly by collectors, is a variety of iolite with hematite inclusions with the colorful name of "bloodshot iolite".
|
www.bwsmigel.info/GEOL.115.ESSAYS/Gemology.Aventurescen...
www.bwsmigel.info/GEOL.115.ESSAYS/Gemology.Aventurescence.html
|
|
|
|
In gemology, aventurescence is an optical reflectance effect seen in certain gems. The effect amounts to a metallic glitter, arising from minute, preferentially oriented mineral platelets within the material. These platelets are so numerous that they also influence the material's body colour...
|
www.absoluteastronomy.com/topics/Sunstone
|
|
|
In this paper we present the results of an investigation on how one can model aventurescence, an interesting and optically appealing property of some gemstones. Our goal was to find a method that is both efficient and reasonably realistic, and that can still be used in the context of a global illumination rendering system.
|
www.cg.tuwien.ac.at/research/publications/2008/weidlich...
www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/
|
|
- Aventurescence some gems have as inclusions relatively coarse to very fine disclike or platy crystals of another mineral. When such materials are illuminated by overhead light source, these inclusions may produce individual reflections, giving the stone an overall glitery effect.
|
www.swdgems.com/phenomena.html
|
|
aventurescence metallic glitter caused by reflection of light at included mineral platelets e.g. fuchsite in aventurine quartz and hematite in aventurine feldspar (sunstone).
|
www.edelsteine.at/gemstone-glossary/a/
|
|
Gemology: an Exploration into the World of Colored Stones; glimpses of a personal adventure into the world of gemology; around the world and under the lens. ... Spessartite Garnet 6.93 ct ; R.W. Wise Collection; Photo: Jeff Scovil, used with permission. ... Gem(m)ology An exploration into the world of colored stones!
|
Aventurescence which is a sparkling, more glitter like, effect caused by metal or glassy looking inclusions in the stone; Chatoyance (from the French "Chat Oeil", or "cat eye") which is a gleaming effect all over or in a distinct cat's-eye;
|
www.beadingdaily.com/forums/ThreadNavigation.aspx?PostI...
www.beadingdaily.com/forums/ThreadNavigation.aspx?PostID=54063&NavType=Next
|
|
