Jasper and patterned stones
Jasper
Opaque silica-rich material
Jasper is opaque silica-rich material. Learn its identifying features, lookalikes, recognized sources, care, treatments, and responsible modern associations.
Material identity
At a glance
- Identity
- Opaque chalcedony / rock term
- Composition
- Mostly SiO2; variable
- Mohs hardness
- About 6.5-7
- Crystal form or structure
- Microcrystalline aggregate
- Recognized sources
- India / Madagascar / Australia / United States - major trade sources
Recognized sources provide geographic and market context. Appearance alone cannot establish the origin of an individual specimen.
Beginner identification
How to identify Jasper
Real material comparison
Reference gallery
Use these credited photographs to compare natural variation. No photograph can authenticate an unknown specimen by itself.
Lookalikes
Commonly confused with
Market context
Treatments and imitations
Observation guide
What to check
Use visual checks to ask better questions, not to replace qualified testing when identity, treatment, value, or origin is consequential.
Practical handling
Care and safety
Responsible buying
Ethics and sourcing
The material story
A short story about Jasper
Evidence and accountability
Sources and review
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IMA Database of Mineral Properties — International Mineralogical Association
Official context for accepted mineral names, formulas, status, and the IMA mineral database.
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GIA Gem Treatments — Gemological Institute of America
Treatment vocabulary, disclosure, and market relevance.
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Mindat — Hudson Institute of Mineralogy
Mineral identity, localities, habits, associations, and documented specimen context.
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CIBJO Blue Books — World Jewellery Confederation
Trade terminology, treatment language, and disclosure frameworks.
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Wikimedia Commons file records — Wikimedia Foundation and individual contributors
Image provenance, authorship, license terms, and source-file records.
Factual claims are checked against claim-relevant reputable sources such as GIA, geological surveys, museums, standards bodies, scholarly literature, and responsible institutional records.
Reddit and other community discussions may identify recurring beginner questions and seller language, but they are not used as mineralogical authority.
- Last fact-checked
- August 31, 2026
- Editorial responsibility
- KREATEUR MIAMI
KREATEUR MIAMI defines the scope, authors and edits the profiles, reviews the source trail, selects the references, and makes every publication decision. Generative AI assisted with standardized comparison illustrations, drafting consistency, and production organization. Generated images are visibly labeled and are never presented as inventory photographs or proof of authenticity.
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