Jeremejevite was named for a Russian mineralogist in 1883, but there are rarely any specimens found in Russia today. Recently Namibia has started to produce some mentionable crystals, but in such small amounts the stone is still very rare. Jeremejevite is typically found in pale blue-green, cornflower-blue to yellowish brown hues.
- Optical Properties
- Characteristic Physical Properties
- Chemistry & Crystallography
Strength: Moderate Fire
1.637-1.653 Tolerance: (+0.002/-0.001)
Uniaxial and Biaxial
Doubly Refractive (DR)
Dichroic, strong blue and near colorless
Jeremejevite often shows banding or growth related color zoning and occasionally step-like growth zoning that looks like lightning bolts. Stones can have natural inclusions, fingerprints and healing feathers.
aluminum borate fluoride hydroxide
Countries of Origin
Myanmar; Russian Federation; Unknown; Namibia; Madagascar; Germany; Tajikistan