Rock Identifier
Dyed Purple Agate (Silicon Dioxide (Chalcedony with artificial dye)) — gemstone
gemstone

Dyed Purple Agate

Silicon Dioxide (Chalcedony with artificial dye)

AI-generated identification · may be incorrect

Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, microcrystalline trigonal crystal structure, conchoidal fracture with no cleavage, and a specific gravity of 2.60 to 2.65.

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Physical properties

Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, microcrystalline trigonal crystal structure, conchoidal fracture with no cleavage, and a specific gravity of 2.60 to 2.65.

Formation & geological history

Formed in cavities of volcanic and metamorphic rocks through the slow deposition of silica-rich groundwater over millions of years, often subsequently enhanced with artificial purple dye.

Uses & applications

Widely used in tumbled stones, ornamental carvings, wire-wrapped jewelry, and metaphysical practices.

Geological facts

While natural purple chalcedony exists, vibrant purple agate is almost always artificially dyed due to the stone's porous microcrystalline structure.

Field identification & locations

Easily identified by its translucent banded matrix showing concentrated dye in micro-fractures; found worldwide with major deposits in Brazil and India.