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Feldspars and optical stones

Obsidian

Natural volcanic glass

Obsidian is natural volcanic glass. Learn its identifying features, lookalikes, recognized sources, care, treatments, and responsible modern associations.

Obsidian shown as a polished palm-stone or cabochon form beside a rough form in a generated educational comparison illustration
Rough and polished comparison Illustrated examples show characteristic forms for visual learning. Compare them with the real photographs below; appearance alone cannot prove identity or origin.

Material identity

At a glance

Identity
Volcanic glass
Composition
Silica-rich glass; variable
Mohs hardness
About 5-5.5
Crystal form or structure
Amorphous
Recognized sources
Mexico / United States / Iceland / Italy / Armenia - notable sources

Recognized sources provide geographic and market context. Appearance alone cannot establish the origin of an individual specimen.

Beginner identification

How to identify Obsidian

Glassy black, brown, gray, or colored material with sharp conchoidal fracture and no crystal structure.

Real material comparison

Reference gallery

Use these credited photographs to compare natural variation. No photograph can authenticate an unknown specimen by itself.

Obsidian real specimen reference photograph
Exact Material Reference S095 Robert M. Lavinsky CC BY-SA 3.0 View image source
Obsidian real specimen reference photograph
Exact Material Reference S096 Robert M. Lavinsky CC BY-SA 3.0 View image source

Lookalikes

Commonly confused with

Black glass, jet, onyx, slag.

Market context

Treatments and imitations

Synthetic glass, coatings, metallic inclusions, and misleading color names occur.

Observation guide

What to check

Inspect for mold seams, excessive bubbles, surface film, and natural flow texture.

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

Avoid impact; edges can be extremely sharp. Use mild soap and water.

Responsible buying

Ethics and sourcing

Collecting may be restricted at cultural or protected sites. Require legal provenance and respect source communities.

The material story

A short story about Obsidian

Obsidian fracture made it an important cutting material in archaeology and modern surgery research.

Symbolic and cultural context

Meaning and modern practice

Modern KREATEUR interpretation

Look directly at a pattern while remembering that a reflection is still an interpretation.

Primary current WARD — Boundaries, protection, discernment

Secondary currents CRUCIBLE

Common intentions

  • protection
  • boundaries
  • discernment
  • release
  • privacy

Historically documented material context

Obsidian was used for blades and mirrors in multiple cultures. Mesoamerican obsidian mirrors could carry divinatory and political meaning in specific contexts.

Anchor intention in action

Let the stone serve as an anchor for attention, ritual, and chosen action. Through a modern Hermetic-inspired lens of correspondence, its qualities can mirror what you intend to practice: clarity becomes a clear next step, protection becomes a boundary or plan, and abundance becomes stewardship and sustained work. This is symbolic practice—not a scientific law or a promise of results. Keep the magic in meaning, relationship, and repetition while keeping agency, consent, evidence, safety, and professional care in the circle. The stone accompanies the practice; it does not replace the action.

References

Sources

  1. IMA Database of Mineral Properties — International Mineralogical Association

    Official context for accepted mineral names, formulas, status, and the IMA mineral database.

  2. GIA Gem Treatments — Gemological Institute of America

    Treatment vocabulary, disclosure, and market relevance.

  3. Mindat — Hudson Institute of Mineralogy

    Mineral identity, localities, habits, associations, and documented specimen context.

  4. CIBJO Blue Books — World Jewellery Confederation

    Trade terminology, treatment language, and disclosure frameworks.

  5. Wikimedia Commons file records — Wikimedia Foundation and individual contributors

    Image provenance, authorship, license terms, and source-file records.

  6. Getty Collection — J. Paul Getty Museum

    Museum object records and historical material-culture context for carefully bounded cultural notes.

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