
mineral
Dyed Agate
Chalcedony (SiO2)
Hardness: 6.5-7 (Mohs scale), Color: Artificially dyed bright pink, Luster: Vitreous to waxy, Crystal structure: Cryptocrystalline quartz, Cleavage: None, Specific gravity: 2.58-2.64. The prominent 'crackle' or webbed pattern is typically due to heat treatment and dye penetration into the fractures (commonly called 'cr…
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Artificially dyed bright pink, Luster: Vitreous to waxy, Crystal structure: Cryptocrystalline quartz, Cleavage: None, Specific gravity: 2.58-2.64. The prominent 'crackle' or webbed pattern is typically due to heat treatment and dye penetration into the fractures (commonly called 'crackle agate' or 'dragon veins agate' in trade).
Formation & geological history
Formed originally as secondary silica deposits in cavities of volcanic, metamorphic, or sedimentary rocks. The vibrant colors and distinct crackle patterns are man-made enhancements created through heating, quenching, and applying synthetic dyes.
Uses & applications
Used primarily in costume jewelry, lapidary arts, and decorative polished pieces. Often cut into cabochons or drilled as pendants.
Geological facts
Naturally occurring chalcedony/agate very rarely exhibits this neon pink coloration. Agate's porous nature makes it highly receptive to artificial dyes, a practice that dates back to ancient Roman times.
Field identification & locations
Can be identified by its unnaturally bright color and dye concentrations within the fracture lines (the 'crackle' pattern). Often sold under trade names rather than as a natural mineral.
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