For jewelers, dealers & appraisers

Quote a price you can defend.

An independent price band for any colored gemstone, with the full attribute trail behind every number. Walk a client through exactly how the figure was reached.

Try free →Open app →See pricing

✓ 14 days of Premier free, no card✓ 20+ species · 15+ attributes

Why the number holds up.

Four reasons a GEMIUS band survives a hard look.

Independent

No inventory, no dealer referrals. The band reflects the market, not a thumb on the scale.

Cited

Taxonomy validated against ten recognized bodies. AGL, AIGS, Bellerophon, GIA, GIT, GRS, Gübelin, LMHC, Lotus and SSEF.

Disciplined

Every band states its range, ±10% on Professional, ±5% on Premier, and tightens as you add attributes.

Legible

Every number ships with the attribute-by-attribute breakdown that produced it.

Verified

Price a stone straight from its lab report. Get a link to verify the report is genuine with the issuing lab.

Built for daily trade work.

The valuation, then the tools to work with it.

Price a stone in real time

All tiers

Enter the actual attributes: origin, treatment, clarity, carat, and 15+ in all, and get the band on the spot.

Read a lab report

Professional & Premier

Upload a certificate and GEMIUS pulls origin, color, clarity, treatment and more straight off it, whatever lab issued it, then prices the stone. No retyping.

Save and revisit

Professional & Premier

Save any valuation and pick it back up when a client returns: the stone, the attributes, the band.

Ask for a second look

Professional & Premier

Not sure about a number? Flag it and our team reviews it by hand, then replies in your dashboard. No data is perfect.

Price alerts

Premier

Track the stones that matter to your book and get notified when the market moves.

Share with a client

Premier

Send a clean, time-limited link to a valuation, not a screenshot.

For platforms

Power your platform with the GEMIUS valuation engine.

For jewelers, dealers, and auction platforms integrating valuations into their own CMS, marketplace, or trade tooling. We work with you on volume, integration shape, and SLA.

REST API · all 20+ species, all 17+ attributes
Custom integration · webhooks, batch valuations
Dedicated support · direct line, custom SLA
Volume pricing · tailored to your query volume

Start free. Upgrade when you’re quoting daily.

Pioneer is free to start. The trade tiers tighten the band and add the second-look review.

Try free →Open app →See pricing