mineral
Blue Chalcedony Cube
Silicon Dioxide (SiO2)
Hardness: 6.5-7 (Mohs scale); Color: semi-translucent grayish-blue; Luster: waxy to vitreous; Crystal structure: Trigonal (microcrystalline); Cleavage: None/Conchoidal fracture; Specific gravity: 2.58-2.64
- Hardness
- 6
- Color
- semi-translucent grayish-blue
- Luster
- waxy to vitreous
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Physical properties
Hardness: 6.5-7 (Mohs scale); Color: semi-translucent grayish-blue; Luster: waxy to vitreous; Crystal structure: Trigonal (microcrystalline); Cleavage: None/Conchoidal fracture; Specific gravity: 2.58-2.64
Formation & geological history
Formed through the deposition of silica-rich fluids in volcanic cavities or sedimentary layers. This specific piece has been man-shaped and polished into a cube from a natural rough stone.
Uses & applications
Primarily used for decorative purposes, crystal healing, meditation, and as a collector's specimen.
Geological facts
Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. Blue varieties are often referred to as 'Blue Lace Agate' when banded, but 'Blue Chalcedony' when the color is more uniform.
Field identification & locations
Identify by its waxy luster, translucency, and lack of visible crystals. Commonly found in Namibia, Turkey, and India. Collectors look for uniform color and high translucency.
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