Rock Identifier
Blue Agate (Silicon Dioxide (SiO2)) — gemstone
gemstone

Blue Agate

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, cryptocrystalline structure with distinct color banding.

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Physical properties

Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, cryptocrystalline structure with distinct color banding.

Formation & geological history

Formed by the deposition of silica from groundwater in cavities of igneous and sedimentary rocks over millions of years.

Uses & applications

Widely used in making jewelry, ornamental carvings, decorative items, and metaphysical collections.

Geological facts

Naturally occurring blue agate is quite rare; most vibrant blue specimens on the market are artificially dyed.

Field identification & locations

Identified by its waxy luster, conchoidal fracture, and concentric color bands, typically found in Brazil, India, and the USA.