| | Description | |
| Comments: | "At the quarries at Fitchburg, beryl of a rich golden hue, approaching the chrysoberyl and topaz in color and hardness, and closely resembling the yellow diamond in lustre, have been blasted out." -- Hamlin, A. C. (1870): The Gems of the United States in Proceedings of the American Association for the Advancement of Science, Eighteenth Meeting, p. 212. | | Quality of samples: | not specified / average specimens | | Rarity at site: | Rare | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | USGS, Min. Res. of the US, Part II: Non-metals, 1916 | | Data | |
| Mineral Data: | Click here to view Heliodor data | | Locality Data: | Click here to view Rollstone Hill Quarry, Fitchburg, Worcester Co., Massachusetts, USA |
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