How Much Is a Trilobite Worth?
Trilobite value: about $5–$150 for most trilobites; $600–$3,250+ for rare spiny species
Most trilobites are affordable: common Moroccan species sell for about $4–$50 and Utah's Elrathia kingii for about $24–$90 at dealers. Well-prepared Moroccan phacopids such as Drotops run about $100–$750, rare spiny species like Dicranurus, Walliserops and Erbenochile list at about $600–$3,250, and exceptional showpieces reach $23,500. Resale is far lower than retail: at 2025–2026 Minnesota auctions, trilobites closed at $6–$55 a lot. Casts, composites and heavily restored pieces are common in the trade, so check a trilobite before you trust any price.
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Trilobite Prices by Type (2026)
Dealer asking prices and dig fees, September 2026, plus winning bids at Minnesota lapidary auctions where marked.
| Type | Details | Typical price |
|---|---|---|
| Common Moroccan trilobites | Calymene (Colpocoryphe), Gerastos and Reedops; the cheapest are sold in bulk | Typical price: $4–$50 |
| Utah Elrathia kingii | Wheeler Shale, ¼–2 in; complete pieces with pyrite inclusions cost more | Typical price: $24–$90; up to $150 |
| Dig your own in Utah | U-Dig Fossils private quarry near Delta: 2 hours or a full day, per adult; you keep what you find | Typical price: $44–$134 |
| Moroccan phacopids | Austerops, Hollardops and Morocops; 4–5 in Drotops, prone or enrolled | Typical price: $99–$750 |
| Spiny Moroccan species | Ceratarges, Dicranurus, Walliserops, Koneprusia and tower-eyed Erbenochile | Typical price: $595–$3,250 |
| Rare Moroccan showpieces | Big lichids, spiny Drotops armatus, undescribed spiny species, mortality plates | Typical price: $3,500–$23,500 |
| Russian trilobites (St. Petersburg area) | Small 'bargain' enrolled Asaphus and Illaenus; prepared Asaphus, including stalk-eyed A. kowalewskii | Typical price: $19–$99; $295–$495 |
| US classics | Flexicalymene (Ohio) and Kainops (Oklahoma); a New York Dalmanites and an Ohio Eldredgeops on a slab | Typical price: $29–$99; $245–$575 |
| Auction resale | Single trilobites and small lots, mostly Moroccan or unidentified; winning bids, Minnesota 2025–2026 | Typical price: $6–$55 a lot |
Private sellers usually get far less than these asking prices: at 2025–2026 Minnesota lapidary auctions, trilobites closed at $6–$55 a lot, and at a 2024 California natural history sale, lots of unprepared Utah Elrathia brought $2–$31.
What Makes a Trilobite Worth More
The factors buyers and dealers actually price on.
Species and rarity
Common species such as Elrathia kingii and Moroccan Calymene and Gerastos sell for a few dollars to under $100. Rare spiny genera such as Dicranurus, Walliserops and Erbenochile start around $600 and reach several thousand.
Restoration and composites
Good dealers state restoration as a share of the shell: 'no restoration', under 1%, 2% or 6–7%. Heavily restored pieces have little collector value, and composites built from parts of several trilobites aren't genuine specimens.
Preparation
Freeing spines and eyes from hard limestone under a microscope takes many hours; one dealer estimates over 50 hours for a spiny Erbenochile. Free-standing spines and crisp eye facets raise value, and harder rock makes prep slower.
Size
Within a species, bigger costs more: tiny Elrathia (¼–½ in) sell for about $24, while 1⅞–2 in pieces run about $80. Drotops can reach about 7 in, though most are 4–5 in.
Pose
Collectors buy both prone (flat) and enrolled (rolled-up) trilobites, and restoration can matter more than pose: one dealer lists a 5 in prone Drotops with no restoration at $395 and an enrolled one with about 6% restoration at $325.
Locality
Morocco supplies most trilobites on the market. Named sources such as Utah's Wheeler Shale, Russia's St. Petersburg region, Oklahoma's Black Cat Mountain and New York's Caleb's Quarry help buyers judge a piece, so keep locality information with it.
Is It Real, Restored or a Fake?
Casts, composites and heavily restored trilobites are sold alongside real ones, especially from Morocco. No single test proves a trilobite is genuine, so look for several signs together.
- 1
Matrix contact
The rock around the trilobite should match the rest of the matrix in color and texture. A sharp, even seam, a different-colored ring or rock lifting away at the edge suggests a cast glued into real matrix.
- 2
Bubbles
Under a 10× loupe, tiny round pits, usually under half a millimeter, scattered over the shell are bubbles from cast resin.
- 3
Identical copies
Several trilobites that look exactly alike, or a plate of different complete species neatly spaced, point to casts. Real trilobites each show small flaws.
- 4
Eyes and cracks
On phacopids like Drotops, real eye lenses look slightly granular and irregular; plaster-filled eyes look smooth and uniform. Natural cracks usually run through both the fossil and the rock.
- 5
UV light
In a dark room, resin, glue and plaster often glow differently from the rock under a UV flashlight. Some sellers paint over repairs to hide this, so use UV together with a loupe.
- 6
Restoration disclosure
Ask how much of the shell is restored and where. Reputable dealers give a percentage, and some share preparation photos.
- 7
Price check
A rare spiny species offered cheaply is almost always a fake or heavily restored.
- 8
What not to do
Skip acetone, heat and hot-needle tests on anything you want to keep or sell. They can damage a real fossil and are best left to a preparator.
Common look-alikes
Resin casts
Whole trilobites cast in resin, often set into real limestone and painted. Look for bubbles and a seam around the edge.
Composites
Real parts from several trilobites, sometimes with non-trilobite pieces used as spines, glued into one 'perfect' specimen.
Carved and painted fakes
Trilobites carved into stone or painted onto a rock surface. Under magnification, carved pieces can show tool marks.
Heavily restored trilobites
Real, but with large areas rebuilt in putty and paint. They are worth far less than natural specimens, so ask for a restoration percentage.
Not sure what you have? Identify it free from a photo.
Collecting Rules to Know
- On BLM land you may collect a reasonable amount of common invertebrate fossils such as trilobites without a permit: up to 25 pounds a day, with hand tools and for personal use only. They may not be sold or bartered.
- National forests allow the same kind of casual collecting (up to 25 pounds a day and 100 pounds a year) except in national monuments, and those fossils can't be sold either.
- Collecting fossils is prohibited in national parks, and casual collecting isn't allowed on national wildlife refuges.
- On private land, including pay-to-dig quarries such as U-Dig Fossils in Utah, you need the owner's permission; at U-Dig you keep what you find. Utah state trust lands require a paid rockhounding permit.
- Canada's Burgess Shale sites in Yoho National Park are protected: Walcott Quarry and Mount Stephen can be visited only on guided hikes or with a research permit, and removing fossils is illegal under the Canada National Parks Act.
How to Sell a Trilobite
- Expect far less than retail: at 2025–2026 Minnesota lapidary auctions, trilobites closed at $6–$55 a lot.
- List the species, locality, size and restoration percentage, with sharp photos of the eyes and of where the fossil meets the rock.
- Federal law bars selling fossils removed from federal land, so don't sell trilobites collected on BLM or Forest Service land. Fossils lawfully owned before March 30, 2009 are exempt.
- Buyers are wary of fakes, and dealers advise checking a seller's reputation and refund policy. Offer a return if an expert finds a cast, composite or undisclosed restoration.
- In the Ruby Glint app you can list trilobites in the marketplace and chat directly with buyers.
Identify, value and sell your finds
Scan a specimen for its name and a value range, keep it in your collection, and list it in the marketplace to chat with buyers.
Trilobite Value Questions
Get answers to common questions about rock identification, rockhounding, and using our platform.
Most sell for about $5–$150: common Moroccan species run $4–$50 and Utah Elrathia kingii about $24–$90 at dealers. Rare spiny Moroccan species list at about $600–$3,250, and exceptional showpieces reach $3,500–$23,500.
Dealers ask about $24–$48 for pieces under about an inch and about $40–$90 for 1½–2 inch pieces, with complete pieces showing pyrite inclusions up to $150. At U-Dig Fossils near Delta, Utah, 2 hours of digging costs $44 per adult and you keep what you find.
Many are genuine, but casts, composites and heavily restored pieces are common in the trade. Check the matrix contact, look for bubbles and identical copies, and ask how much of the shell is restored.
Look for rock that matches in color and texture right up to the fossil, natural cracks running through both, and no tiny bubbles under a 10× loupe. A UV flashlight can show resin or glue. Avoid acetone and heat tests.
On BLM land and in most national forests, yes, in small amounts for personal use: up to 25 pounds a day, and you can't sell them. Collecting is banned in national parks, and private land needs the owner's permission.
Not if you found it on federal land such as BLM or Forest Service land. That federal ban doesn't cover fossils collected with permission on private land, such as a pay-to-dig quarry.
Rarity, size and preparation. Spiny species can take 50 or more hours of microscope work to free from hard limestone, and complete, unrestored specimens of rare species are hard to find.
Related guides
Sources
Price ranges come from published dealer prices, auction results and the sources below, checked September 25, 2026. Prices move, so treat them as a guide.
- BLM: Can I collect fossils?
- eCFR: 43 CFR Part 49, Subpart I (casual collecting)
- eCFR: 36 CFR Part 291 (fossils on national forests)
- 16 U.S.C. 470aaa-5: Prohibited acts (Cornell LII)
- Parks Canada: Walcott Quarry, Burgess Shale
- Utah Geological Survey: Rock, mineral and fossil collecting rules (PI-23)
- FossilEra: Trilobite fossils for sale
- U-Dig Fossils: Rates and booking
- GoFossilHunting: How to tell if a fossil is fake
- Buried Treasure Fossils: Trilobite authenticity notes