Show the ringbefore it is made.

Open your Rhino or GLB file, render it photoreal on your own graphics card, and weigh the metal and stones from the geometry. Then send your client one link to approve that exact version.

Metal
Centre stone
Try it with a sample ring Create a free account

No card, no install. Your files stay in your browser.

An 18k gold solitaire with a brilliant-cut diamond on black velvet, path-traced in Jart
Path-traced · 256 samples750 · 18K
The six-prong solitaire · 18k yellow gold, 1.03 ct brilliant · rendered in Jart
Live in your browser

Turn it in your hands.

This ring is drawn live by Jart's real-time renderer, on your own graphics card. Scroll, and it turns the way it will for your client.

19 metals · 51 stones

Every metal and stone, one click.

Yellow, rose and white gold, then sapphire, emerald and ruby. Each alloy has its own colour and edge tint, and each stone refracts with its own index and fire.

Real refraction

Into the stone.

Jart follows the light through every facet of the cut, so the sparkle you see comes from the stone itself.

Design Facts

Every part, weighed before it is cast.

The band, six prongs, the centre stone and eighteen pavé stones, recognised from your object names. Metal weight, carats and ring size come from the geometry itself:

Metal
2.76 g of 18k yellow gold
Stones
1.26 ct · 19 diamonds
Centre stone
≈ 1.03 ct · 6.50 mm round
Ring size
US 6.5 · EU 53
Size
20.5 × 26.1 × 7.0 mm
Client approval links

What they approve is what gets cast.

Send one link. Your client turns the ring in 3D, sees its weight and stones, comments, and approves the version by name. No account needed on their side.

The six-prong solitaire · version 218k yellow gold · 2.76 g · 19 diamonds · 1.26 ct Approved by your client, by name

Approval links come with Pro. The record keeps a fingerprint of the approved files.

Try Jart free

One ring, four ways to show it.

Each look sets the light, backdrop, floor and camera together. Pick one, then change anything you like.

The sample ring in the White e‑commerce lookThe sample ring in the Black velvet lookThe sample ring in the Warm lifestyle lookThe sample ring in the Floating look
The six-prong solitaire in the White e‑commerce look, path-traced in Jart.

From your file to your client in minutes.

Open the sample ring
  1. 01Open

    Open the file you already have

    Rhino 3DM or GLB, plus OBJ, STL, FBX and more. Stones and metals are recognised from your object names.

    Fig. 2 · Open a design: drop your file, or start from a sample.
  2. 02Style

    Choose a look, a metal and the stones

    Every choice is a picture, not a number. Fine control is there when you need it.

    Fig. 3 · Looks and lighting for the sample ring, in the studio.
  3. 03Send

    Render it and send it

    Your client opens any of them without an account.

    • Photographs up to 8K, transparent if you like
    • A turntable video, or a 360° set for your shop
    • AR on their phone, at the ring's real size
    • A view-only 3D link, or an embed for your site
    Fig. 4 · The Black velvet look, path-traced in Jart.

Your design stays yours.

Unreleased work is the whole business, so nothing leaves your browser until you decide it should.

  • Opened files stay on your computer. The studio renders on your own graphics card.
  • Saved projects are private to your account. Download or delete everything at any time.
  • Links are view-only. Your original files are included only if you say so, and links expire after seven days unless you keep them.

Questions jewelers ask first.

Which files can I open?

Rhino and Matrix 3DM files with saved render meshes, and GLB or glTF. OBJ, FBX, STL, PLY, 3MF, USD and a few more also work. STEP and IGES need converting first. Lighting accepts HDR, EXR, JPG and PNG.

Do I need a powerful computer?

No special hardware. Everything runs in your browser on your own graphics card, so a recent laptop is enough. Big files and 8K renders simply take longer.

Render all you like. Pay when it's business.

Every plan renders without limits, because Jart runs on your own graphics card. Pro adds what you deliver: approvals, the cast check and commercial use.

Free

Trying Jart, students and hobbyists

$0 no card

  • All materials, looks, on-hand view, Interactive and Render
  • Unlimited renders on your own computer
  • Stills up to 2K, with a small Jart mark
  • 3 cloud projects, 3 share links for 7 days
  • Design facts: metal weight, stones and ring size from your file
Start free

Pro

Freelance and independent CAD designers

$29 a month, or $290 a year

  • Everything in Free, without the mark
  • Stills up to 8K, 16-bit PNG and EXR, transparent
  • Commercial use of your images
  • Client approval of the exact files, kept on record
  • Cast-ready check and a pack for your caster
  • 200 cloud projects, 50 share links that can be permanent
See the founding offer

Studio and Business, for teams, are coming soon. Compare all plans

Bring a design you are working on.

Try the sample ring first, or open your own file. If something does not work, Levon reads every message.

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