| Title | Amethyst, variety of quartz, faceted gemstone | 
| Description | Amethyst (SiO2) is the purple variety of quartz and a popular gemstone. Although it must always be purple to be amethyst, it does have a wide range of purple shades. As a mineral sample, amethyst is popular for its color and nice crystal shapes that produce a handsome, purple, sparkling cluster. | 
| Location | Brazil ▹ Minas Gerais | 
| Photographer | Darla Sondrol. 2001-11-04. | 
| Collection | Ward’s Natural Science, 49 E 6201. | 
| Key words | amethyst, quartz | 
| Tech details | 23 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. | 
| GeoDIL number | 1742 | 
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