Dyed Agate

Physical Properties

Hardness: 6.5-7 (Mohs scale), Color: Cobalt blue and greenish-brown (artificially dyed), Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.60-2.65

Formation & Geological History

Formed in volcanic and metamorphic environments as silica-rich water fills cavities in rock. This specific specimen has been tumbled and artificially dyed to achieve its intense colors.

Uses & Applications

Decorative items, tumbled stones for collectors, jewelry (beads/cabochons), and metaphysical uses.

Geological Facts

Agate is one of the most common materials used for lapidary work. Most bright neon-blue or purple agates found in shops are dyed, as these colors rarely occur so intensely in nature.

Field Identification & Locations

Identify in the field by its banded appearance and waxy luster. In retail settings, look for 'pooling' of color in cracks, which indicates artificial dyeing.

Identified on: 4/13/2026

Mode: Standard