Rocky Mountain Minerals and Fossils
Chrysoberyl (variety Alexandrite) in schist - Campo Formosa, Bahia, Brazil
Chrysoberyl (variety Alexandrite) in schist - Campo Formosa, Bahia, Brazil
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Here is a classic Brazilian mineral specimen: a nice alexandrite crystal cluster. Alexandrite is a special variety of chrysoberyl that changes colour when exposed to different light sources. For alexandrite, it is red in incandescent (artificial) light - as seen in these photos - but will be green in strong daylight. Most of the material from Bahia is opaque and included like this specimen but the colour change is certainly fun. I personally enjoy gem minerals still embedded in their host rock too. I feel this gives the specimen better geologic context for understanding its formation. This specimen's matrix is composed of schist which reveals a metamorphic environment of formation. Ex Rob Belcher collection. Mounted on an acrylic base. From: Campo Formosa, Bahia, Brazil.
Mineral: Chrysoberyl (variety Alexandrite) in Schist
Locality: Campo Formosa, Bahia, Brazil
Crystal System: Orthorhombic
Mineral Class: Oxides
Provenance: Ex Rob Belcher Collection
Dimensions: 5.5 × 4.5 cm
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The Exact Specimen Pictured
The specimen shown in the photographs is the exact specimen you will receive.
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Carefully Packed for Collectors
Each specimen is carefully and securely packed to help protect it during shipment.
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Shipping & Local Pickup
We ship to Canada and the United States. Other destinations may be available by arrangement—contact us before ordering. Calgary pickup by appointment.