AI Jeweler · first model free
Eternity ring: photo to 3D CAD, gold weight and price
Eternity rings are arithmetic: circumference divided by stone size. Give the ring size and stone size and the studio tells you how many stones, how many carats and what it costs to set them.
The numbers that matter
- Stone count
- Size 54 (17.2 mm inner diameter) takes about 26 × 2 mm stones full, 13 half.
- Carats
- 2 mm rounds are about 0.03 ct each: a full eternity in 2 mm is roughly 0.8 ct total.
- Resizing
- Full eternity rings cannot be resized; half eternities can. Get the size right in the model.
- Setting
- Channel is most secure; shared-prong shows more stone; both are priced per stone.
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 it a full eternity in 2.5 mm stones”
- “Change to channel setting”
- “Show it in size 56”
- “Price the stones as lab-grown”
Frequently asked
- How many stones do I need?
- The model computes it from the inner circumference and stone size; change either and the count updates.
- What is the resale of an eternity ring?
- Pre-owned mode shows the metal at scrap payout plus small stones at resale, which is low for melee; lab-grown melee is close to zero.
- Can I see the metal weight for platinum?
- Yes, the weight table includes platinum 950 and silver 925 alongside 9K to 24K gold.