a·ven·tu·res·cence

(ə-vĕn′chə-rĕs′əns)

An optical effect characteristic of some translucent minerals, such as aventurine, caused by the presence of tiny, aligned inclusions of other minerals and manifesting itself as brightly colored reflections.

[aventur(ine) + -escence.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

References in periodicals archive

24, as museum docent and gemologist Sakina Bharani discusses the different light effects in gems that create phenomena such as stars, cat's eyes, adularescence and aventurescence. Afterward, join a guided tour of the Smithsonian Gems exhibit.

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Their highly reflective surfaces produce optical effects such as aventurescence in oligoclase, often called sunstone (Gubelin and Koivula, 1986, pp.

From exsolution to 'Gold Sheen': a new variety of corundum

24, as museum docent and gemologist Sakina Bharani discusses the light effects in gems that create phenomena such as stars, cat's eyes, adularescence and aventurescence. After, join a guided tour of the Smithsonian Gems exhibit.

Mark your calendar -- Things to do in DuPage County Today Thursday 22 Saturday 24 Thursday 1 Friday 2

Sakina Bharani, gemologist and museum docent, will discuss the different light effects in gems that create beautiful and rare phenomena such as stars, cat's eyes, adularescence, aventurescence and more.

Explore the optical illusions of colored gems at Lizzadro

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