AI Jeweler · first model free
Signet ring: photo to 3D CAD, gold weight and price
Signet rings are solid, so weight and karat set the price; the face and engraving set the character. Pick the face shape, size and metal, add the engraving, and see the weight and price update.
The numbers that matter
- Face sizes
- Oval 12 × 10 mm for a slim finger, 14 × 12 mm classic, 16 × 14 mm bold; round and cushion faces likewise.
- Weight
- A 14 × 12 mm 18K signet in size 60 weighs 9–12 g; 9K versions weigh about the same but cost far less in gold.
- Engraving
- Hand-engraved seals cost more than machine engraving; both are separate making lines.
- Stones
- Onyx, carnelian or a bezel-set diamond replace the metal face.
What the AI extracts
- Every component as parametric geometry: band, setting, prongs, halo, links, clasp
- Each stone group with cut, size in mm and estimated carat weight
- Metal colour and, where a hallmark or document shows it, the karat
- A gem report and a metal-weight table for 9K to 24K, platinum and silver
- A price estimate: new, pre-owned or to be made, natural or lab-grown, per country
Things you can say
- “Make the face a 14 by 12 oval”
- “Change to 9K yellow gold”
- “Engrave the initials AB”
- “Show what it costs to make in the UK”
Frequently asked
- Why is 9K so much cheaper?
- 9K is 37.5% gold; the metal line uses that purity at spot, so the same ring costs about half the gold of 18K.
- Can I put a family crest on it?
- Describe or upload the crest; the studio places the engraving on the face and prices it as hand engraving.
- Does size change the price much?
- Yes for a solid ring: two sizes up adds about 0.5 g.