Back to guide
Agate
Agate is valued for its banded, many colors appearance and distinctive natural character. Quality and value depend on color, clarity, cut, size, origin, treatment, and documentation.
- Mineral family
- Chalcedony
- Chemistry
- SiO2
- Mohs hardness
- 6.5-7
- Colors
- Banded, many colors
- Common origins
- Brazil, Uruguay, India
- Wearability
- Best in protected settings and requires careful wear.
Treatments and synthetics
Dyeing is common in vivid colors.
Care guidance
Use only a soft damp cloth and avoid heat, chemicals, impact, ultrasonic, and steam cleaning.
Buyer checklist
Confirm classification, treatment, dimensions, weight, origin claims, return terms, and any laboratory report before purchase.