mineral
Yellow Quartz (possibly dyed)
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs), Color: Bright yellow, Luster: Vitreous to waxy (when polished), Crystal system: Trigonal/Hexagonal, Specific gravity: 2.65
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Physical properties
Hardness: 7 (Mohs), Color: Bright yellow, Luster: Vitreous to waxy (when polished), Crystal system: Trigonal/Hexagonal, Specific gravity: 2.65
Formation & geological history
Quartz forms in many geological environments, particularly in igneous and metamorphic rocks. This specimen appears to be a tumbled stone, likely formed by water erosion or mechanical tumbling of raw quartz fragments. The neon-yellow hue often suggests artificial dye or heat treatment.
Uses & applications
Tumbled stones like this are primarily used for decoration, stone collecting, crystal healing practices, or as inexpensive jewelry components.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Bright yellow natural quartz is rare (Citrine), and most neon-yellow specimens found in gift shops are clear quartz that has been chemically dyed.
Field identification & locations
Identify by its hardness (ability to scratch glass) and lack of cleavage. In the field, look for hexagonal crystal points or massive milky clusters. This specific specimen is identifiable as 'tumbled' due to its smooth, rounded, and polished surface.
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