mineral
Yellow Chalcedony (Tumbled/Cabochon)
Silicon dioxide (SiO2)
Hardness: 6.5-7 (Mohs scale), Color: Waxy pale yellow to butterscotch, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline/cryptocrystalline), Cleavage: None, Fracture: Conchoidal.
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Waxy pale yellow to butterscotch, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline/cryptocrystalline), Cleavage: None, Fracture: Conchoidal.
Formation & geological history
Formed at low temperatures through the deposition of silica from groundwater in cavities of other rocks, typically volcanic or sedimentary. This specimen has been artificially shaped and polished into an oval cabochon.
Uses & applications
Primarily used in jewelry (as a gemstone), for ornamental carvings, and as a pocket stone or meditation aid in metaphysical practices.
Geological facts
Yellow chalcedony is a cryptocrystalline variety of quartz. It is often referred to as beekite when found replacing fossils. Its translucency distinguishes it from yellow jasper, which is opaque.
Field identification & locations
Identify by its waxy luster, lack of visible crystals, and ability to scratch glass. Natural yellow shades are less common than white or blue, and some specimens are dyed to enhance the color.
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