SPECIMEN STORE · ALL INDEXED

Browse Every Specimen We Hold

View the certified collection on OpenSea

Every specimen in the GoodsMash treasury, photographed, weighed, and indexed. Real thumbnails scaled to fit. The cataloged label means inventory research only. A piece becomes buyable only after it is converted to an onchain SpecimenCertificate, measured, custody-approved, and connected to a verified escrow purchase route. No catalog payment is available here.

fluorescent36 pieces premium8 pieces standard7 pieces bulk5 pieces

UV-FLUORESCENT (priced by coverage, not weight) (36)- open to see all

UV-Fluorescent Matrix (Green SW)

SPX-016UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #16UV-Fluorescent (green SW)weight TBD · ~2 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-017UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #17UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-018UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #18UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-019UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #19UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-020UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #20UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-021UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #21UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-022UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #22UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-023UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #23UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-024UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #24UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-025UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #25UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-026UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #26UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-027UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #27UV-Fluorescent (green SW)weight TBD · ~2 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-028UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #28UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-029UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #29UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-030UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #30UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-031UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #31UV-Fluorescent (green SW)weight TBD · ~2-3 cmUV coverage: not measured yet

$30–50 (awaiting weight + UV%)cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-032UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #32UV-Fluorescent (green SW)2.5g · ~2.5 cmUV coverage: 40%

$15cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-033UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #33UV-Fluorescent (green SW)8.4g · ~3 cmUV coverage: 35%

$50.4cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-034UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #34UV-Fluorescent (green SW)2.3g · ~2 cmUV coverage: 20%

$6.9cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-035UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #35UV-Fluorescent (green SW)4.5g · ~2-3 cmUV coverage: 35%

$27cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-036UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #36UV-Fluorescent (green SW)7.4g · ~2-3 cmUV coverage: 35%

$44.4cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-037UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #37UV-Fluorescent (green SW)4.6g · ~2-3 cmUV coverage: 35%

$27.6cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-038UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #38UV-Fluorescent (green SW)16.9g · ~3 cmUV coverage: 50%

$169cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-039UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #39UV-Fluorescent (green SW)17.6g · ~3 cmUV coverage: 50%

$176cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-040UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #40UV-Fluorescent (green SW)11.6g · ~2-3 cmUV coverage: 40%

$69.6cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-041UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #41UV-Fluorescent (green SW)0.6g · thumbnail ~1 cmUV coverage: 30%

$3.6cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-042UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #42UV-Fluorescent (green SW)5g · ~2 cmUV coverage: 35%

$30cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-043UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #43UV-Fluorescent (green SW)1.5g · thumbnail ~1 cmUV coverage: 30%

$9cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-044UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #44UV-Fluorescent (green SW)7.3g · ~3 cmUV coverage: 70%

$73cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-045UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #45UV-Fluorescent (green SW)1.4g · thumbnail ~1 cmUV coverage: 30%

$8.4cataloged · certificate pending

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UV-Fluorescent Matrix (Green SW)

SPX-046UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #46UV-Fluorescent (green SW)8.3g · ~2-3 cmUV coverage: 35%

$49.8cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-047UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #47UV-Fluorescent (green SW)3.6g · ~2 cmUV coverage: 35%

$21.6cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-048UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #48UV-Fluorescent (green SW)1.1g · thumbnail ~1 cmUV coverage: 30%

$6.6cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-049UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #49UV-Fluorescent (green SW)3.8g · ~2 cm triangularUV coverage: 35%

$22.8cataloged · certificate pending

Full specimen page

UV-Fluorescent Matrix (Green SW)

SPX-050UV-SW

UV-Fluorescent Matrix (Green SW)Certified · token #50UV-Fluorescent (green SW)1.8g · thumbnail ~1.5 cmUV coverage: 30%

$10.8cataloged · certificate pending

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UV-Fluorescent Mix (Green + Purple SW) — BULK POOL

SPX-054UV-SW

UV-Fluorescent Mix (Green + Purple SW) — BULK POOLCertified · token #54UV-Fluorescent (green SW)633.8g · BULK POOL: each cert = ONE SMALL random piece (single fluorescent chunk, 1-2cm, ~3-6g) from the 633.8g bowl of ~30-40 pieces. Pool is never sold as one piece.UV coverage: 55%

$45cataloged · certificate pending

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PREMIUM (beryl, aquamarine, pegmatite mixes) (8)- open to see all

Smoky Quartz + Beryl in pegmatite matrix

SPX-006

Smoky Quartz + Beryl in pegmatite matrixCertified · token #6Beryl & Aquamarineweight TBD · ~13×9 cm

$90–140cataloged · certificate pending

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Pegmatite mix: smoky quartz, feldspar (amazonite-var), schorl

SPX-007

Pegmatite mix: smoky quartz, feldspar (amazonite-var), schorlCertified · token #7Tourmalineweight TBD · ~13×9 cm

$80–130cataloged · certificate pending

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Aquamarine-variety Beryl in matrix

SPX-008

Aquamarine-variety Beryl in matrixCertified · token #8Beryl & Aquamarineweight TBD · ~3×2 cm crystal

$70–110cataloged · certificate pending

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Beryl (tan/pink, etched prismatic crystal)

SPX-010

Beryl (tan/pink, etched prismatic crystal)Certified · token #10Beryl & Aquamarineweight TBD · ~6×5 cm

$75–120cataloged · certificate pending

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Precious Opal (light body tone, play-of-color) — polished

SPX-056

Precious Opal (light body tone, play-of-color) — polishedCertified · token #56Precious Opal14 ct · Min. 14 ct stated; two photos (front + reverse)

$7,000 (14 ct @ $500/ct)cataloged · certificate pending

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Precious Opal (light body tone, play-of-color) — polished

SPX-057

Precious Opal (light body tone, play-of-color) — polishedCertified · token #57Precious Opal22 ct · ~22 ct stated; two photos

Not yet appraised — owner declined to estimatecataloged · certificate pending

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Dark Opal — cut and polished

SPX-058

Dark Opal — cut and polishedCertified · token #58Precious Opal7 ct · ~7 ct stated

Pending appraisalcataloged · certificate pending

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Opal — carved form, green colour response

SPX-059

Opal — carved form, green colour responseCertified · token #59Precious Opal15 ct · ~15 ct stated

Pending appraisalcataloged · certificate pending

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STANDARD (smoky quartz, mica, common crystals) (7)- open to see all

Smoky Quartz crystal on feldspar pegmatite

SPX-001

Smoky Quartz crystal on feldspar pegmatiteCertified · token #1Feldsparweight TBD · ~8×6 cm matrix, main crystal ~2.5 cm

$45–70cataloged · certificate pending

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Smoky Quartz (cluster mass, translucent)

SPX-002

Smoky Quartz (cluster mass, translucent)Certified · token #2Quartzweight TBD · ~11×6 cm

$40–60cataloged · certificate pending

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Smoky Quartz mix with possible garnet (unverified)

SPX-003

Smoky Quartz mix with possible garnet (unverified)Certified · token #3Garnetweight TBD · ~10×7 cm

$35–55cataloged · certificate pending

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Smoky Quartz

SPX-005

Smoky QuartzCertified · token #5Quartzweight TBD · ~10×6 cm

$35–55cataloged · certificate pending

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Smoky Quartz in pegmatite mix

SPX-009

Smoky Quartz in pegmatite mixCertified · token #9Quartzweight TBD · ~10×7 cm

$40–60cataloged · certificate pending

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Mica (muscovite book)

SPX-012

Mica (muscovite book)Certified · token #12Micaweight TBD · ~7×6 cm

$20–35cataloged · certificate pending

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Smoky Quartz

SPX-014

Smoky QuartzCertified · token #14Quartzweight TBD · ~8×5 cm

$35–55cataloged · certificate pending

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BULK (capped at $15-25/lb rockhound floor) (5)

Milky Quartz

SPX-004

Milky QuartzCertified · token #4Quartzweight TBD · ~9×6 cm

$15–25cataloged · certificate pending

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Mica (small book)

SPX-013

Mica (small book)Certified · token #13Micaweight TBD · ~4×3 cm

$10–18cataloged · certificate pending

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Milky Quartz (raw, ~10-14 chunks)

SPX-051

Milky Quartz (raw, ~10-14 chunks)Certified · token #51Quartz713.2g · Bowl of 3-8 cm chunks, total 713.2g

$31.447cataloged · certificate pending

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Smoky Quartz (raw, ~8-12 chunks)

SPX-052

Smoky Quartz (raw, ~8-12 chunks)Certified · token #52Quartz694.5g · Bowl of 3-5 cm chunks, total 694.5g

$30.622cataloged · certificate pending

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Clear/milky quartz crystal fragments

SPX-053

Clear/milky quartz crystal fragmentsCertified · token #53Quartz164.8g · Bowl of 4-6 cm chunks, total 164.8g

$7.266cataloged · certificate pending

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How a certificate works

Treasury sales are paused while the next release is prepared, so there is no buy button to send you to yet. What exists today is the certificate pipeline - 59 certificates minted onchain, each one a title deed to a real hand-dug rock.

See the certificate pipeline

We mint a SpecimenCertificate NFT for a piece - photo, weight, UV coverage, all locked onchain.
Converted pieces appear in the vault with their real photo and data - display-only for now while we prepare the next release. Certificates that owners hold are normal ERC-721s and trade peer-to-peer or on OpenSea.
Once a certificate is issued it is a standard ERC-721 - anyone can list/trade it on OpenSea or any marketplace.
Physical redemption ships US-only (off-chain KYC). Hold the cert forever or redeem for the rock.
Data points (grams, radiation CPM, grade) are updateable onchain with a visible correction history.