The best home for your mineral collection.
Catalog every specimen the way it deserves — photos and video, species and locality, size, provenance, and value. Best-in-class, beautifully organized, and completely free.
Everything a serious catalog needs.
Not a spreadsheet. A purpose-built record for every piece you own, connected to live species data, localities, and the market.
Catalog every detail
Record each specimen once, properly: main species plus varieties, the exact locality down to the mine, dimensions, weight, repairs, and a rich description — all linked to EarthWonders' species and locality database.
- Main + 3 species
- Locality & mine
- Dimensions & weight
- Repairs
- Rich description
Photos and video that do it justice
Add up to ten photos and videos per specimen. Reorder them with a drag, crop in place, and enhance — plus an optional dark-background shot for that gallery-on-black look.
- Up to 10 per specimen
- Photo & video
- Drag to reorder
- Crop & enhance
- Dark-background shot
Light or dark, your call
Flip your whole collection between a clean light theme and a dramatic dark one with a single switch. Specimens shot on black look stunning, edge to edge.
- Light or dark theme
- One switch
- Specimens on black
- Your whole profile
Part of the largest gallery online
Your specimens can join the biggest gallery of fine collections anywhere — tens of thousands of pieces to learn from, get inspired by, and be discovered in. Or keep everything private. Your call.
- Tens of thousands of pieces
- Discover by species & locality
- Get inspired
- Or stay private
More than a catalog.
The details that turn a list of rocks into a real, living collection.
Provenance & publications
Build a full chain of ownership with dates, prices, and old labels — and cite every book or article a piece has appeared in.
Know what it's worth
Track your portfolio's value over time and see how it breaks down by species and locality, from live market data.
Collection insights
Understand your collection's composition and who's viewing it, with charts that update automatically.
Saved-search alerts
Hunting a specific species or locality? Save the search and get notified the moment a match appears.
Private by default
Every specimen is public or private on your terms — stay anonymous as an owner, and share single pieces by link or QR.
Works anywhere
Auto-saves as you type and works on any device, so your collection is always with you and always backed up.
Make and get offers
Open any of your specimens to offers and negotiate privately — or make an offer on a piece you'd love to own.
Message collectors directly
Reach any collector or dealer with built-in private messaging — ask about a piece, its history, or a possible trade.
Free, and actually free.
Collection management on EarthWonders is free — no specimen caps, no credit card, no trial clock. It's free because EarthWonders is also a marketplace and community: when you're ready to buy, sell, or show your collection, everything's already here.
Questions, answered.
Start cataloging today.
Create your free account and add your first specimen in minutes.