mineral
Dyed Agate
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 6.5-7 on Mohs scale. Color: Deep magenta and purple (artificially dyed). Luster: Vitreous to waxy. Crystal Structure: Hexagonal (cryptocrystalline). Cleavage: None. Specific Gravity: 2.58-2.64.
- Hardness
- 6
- Color
- Deep magenta and purple (artificially dyed)
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 on Mohs scale. Color: Deep magenta and purple (artificially dyed). Luster: Vitreous to waxy. Crystal Structure: Hexagonal (cryptocrystalline). Cleavage: None. Specific Gravity: 2.58-2.64.
Formation & geological history
Formed in volcanic cavities or sedimentary rocks through the deposition of silica from groundwater. The intense color is achieved through a multi-step chemical dyeing and heating process after the stone is tumbled.
Uses & applications
Used primarily for decorative items, inexpensive jewelry, worry stones, pocket charms, and as educational specimens for children.
Geological facts
Agate is naturally porous, allowing it to soak up chemical dyes like a sponge. While natural agates are often grey or brown, they have been dyed since Roman times to enhance their visual appeal.
Field identification & locations
Identify by looking for unnatural, neon, or vibrant colors that do not occur in nature, especially concentrated in cracks or bands. Commonly found in rock shops and souvenir stores worldwide.
