Buy smart. Re-slab smarter.

Drop in a PSA cert number and see whether it's a strong candidate for re-submission to a PSA 10. No guessing, no squinting at scans — just data.

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How it works

Three steps from cert number to confidence score.

Enter a PSA cert number

Found a PSA 9 you might buy? Paste the cert. We fetch the official scans from PSA directly.

ML compares to known 10s

A Siamese Network scores similarity against our reference set of PSA 10s and BGS Black Labels for the same card.

Decide with confidence

Get a similarity score, a defect breakdown, and a verdict. Buy the strong candidates, pass on the rest.

Built for collectors who take it seriously

PSA 10s often fetch 3–10x the price of a PSA 9 of the same card. The difference between a 9 and a 10 is usually millimeters of centering or a hairline of whitening. Gem Hunter reads those signals in seconds.

Scan a listing before you bid
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Track outcomes across submissions (Pro)
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PSA 9 cert #12345678

Similarity to PSA 10 set 87%

Centering

92%

Corners

88%

Edges

76%

Surface

93%

Verdict Strong candidate

Example output — not a real cert.

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