Obsidian identifier · Experimental
Compare dark glassy material.
Volcanic glass and industrial glass can look similar. We look at edge translucency and surface detail and include manufactured glass as an alternative.
Add 1–5 photos of one specimen
JPEG, PNG or WebP · up to 10 MB each · 30 MB per scan
Optional details you know first-hand
Tell us what you measured yourself, what someone told you, and what a report says — we keep these separate.
Privacy: photos are used only for your scan, location data is removed before upload, and nothing is used for training unless you opt in. Guest scans are deleted after 24 hours.
Features that may help
- Conchoidal fracture
- Edge colour
- Sheen
Common confusions
- Slag glass
- Bottle glass
- Dark chalcedony
What a photo can't conclude
- Volcanic source
- Age
Questions
Is it safe to handle?
Fresh edges can be very sharp. Handle carefully and don't break pieces to test them.