Lovely saffron-colored crocoite is quite a rare mineral. Although too soft and brittle for jewelry wear, a few crystals have been faceted for collectors.
This mineral shows a distinct absorption band at 5550 but only in thin fragment specimens. It transmits light mainly in the yellow-red region of the spectrum.
Crocoite’s intense red-orange to yellow-orange color completely masks its high dispersion.
Crocoite has an orange-yellow streak. Please note: don’t conduct streak testing on finished gems. Test material in inconspicuous spots as a last resort only.
This mineral shows a distinct absorption band at 5550 but only in thin fragment specimens. It transmits light mainly in the yellow-red region of the spectrum.
Synthetic lead(II) chromate, or “chrome yellow,” has the same chemical formula as crocoite but is only used as a pigment. There’s no known jewelry use for this material.
With a hardness range of 2.5 to 3, crocoites could be cut by coins and knives. Therefore, jewelry use isn’t recommended. For storage suggestions and other information, consult our gemstone collection guide.
Although this mineral contains hexavalent chromium and lead, both toxic, handling crystals or finished gems should pose no problems. However, when cutting this material, avoid ingesting or inhaling particles, wash your hands, and don’t pour solutions with this material down the drain. For more information, consult our articles on toxic and radioactive gem materials and health hazards and safety tips for gem cutters.
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