| Title | Green tourmaline |
| Description | These samples of tourmaline are not of sufficient quality to be considered gems, but many samples from California are. Most people consider tourmaline to be a single mineral. But in fact it is a group of closely related mineral varieties with different colors. Green tourmaline is called verdelite; often the green in more pronounced than in this photograph. These crystals are 6 cm long. |
| Location | USA ▹ California ▹ San Diego County |
| Photographer | Darla Sondrol. 2001-07-02. |
| Collection | University of North Dakota Mineralogy Collection. |
| Key words | tourmaline, California |
| Tech details | 471 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 1014 |
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