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- Title
A new gemstone from Italy: "Violan quartz.".
- Authors
Macrì, Michele; Maras, Adriana; Troilo, Fabrizio; Serracino, Marcello
- Abstract
The article presents information on a new gemstone from Italy called Violan quartz. Violan is an obsolete term for violet-to-blue. The only known localities for this type of clinopyroxene is the Praborna mine, located near Saint-Marcel in Aosta Valley, northern Italy. Violan, also known from southern Baffin Island, Nunavut, Canada, is found as massive aggregates in calc-silicate lenses. Violan is being collected because of its rarity and deep violet color. An Italian geologist presented two pear-shaped cabochons of colorless quartz with violet inclusions at the Verona Mineral Show in May 2007. Using gemological techniques and electron-microprobe analysis of the quartz, the violet inclusions were identified as violan.
- Subjects
ITALY; QUARTZ; ROCK-forming minerals; MINERALS; SILICATES; MICROPROBE analysis
- Publication
Gems & Gemology, 2007, Vol 43, Issue 3, p262
- ISSN
0016-626X
- Publication type
Article