AI Jeweler
Lab-grown diamond price calculator
Upload the ring or describe it. The estimate prices the stones from a lab-grown table that is flat across sizes, and from the natural table that jumps at every carat mark, so you see exactly what the origin is worth, new and second-hand.
Natural per-carat brackets by size and grade; lab-grown per-carat that barely rises with size.
Lab-grown stones resell for a small fraction; the metal is most of the used value. The estimate shows it.
Setting, making, metal and VAT do not care about origin; they are priced once.
How it works
- 1Upload photos
One or more angles of a ring, pendant, chain or bracelet; sketches and renders are fine.
- 2AI models the construction
Band, setting, prongs, halo, stones and chain links are rebuilt as parametric geometry.
- 3Calibrate
Give the ring size or one measurement; optionally the karat and stone details.
- 4Edit by talking
“18K rose gold”, “2 carat centre stone”, “band 0.4 mm thicker”, “show it with emeralds”.
- 5Weight, price, export
Volume-based gold weight for every karat, the day’s metal value in 25 currencies, STL for casting.
A 1 ct G VS round is about $5,500 per carat natural and about $430 lab-grown at trade; a 2 ct is $11,000 versus $520. Those gaps drive everything else: a lab-grown ring's price is mostly the setting and the gold.
How to use it
Price the piece, tap Lab-grown, compare the headline and the resale figures. Under More details, add a certificate: GIA or IGI premiums apply to natural stones only; lab-grown stones carry IGI reports as the norm.
Frequently asked
- Why is lab-grown resale so low?
- Supply is unlimited and prices fall yearly, so a buyer can get a new one cheaper. Buy them to wear.
- Can I mix natural centre and lab-grown halo?
- Yes: name the halo lab-grown in chat and the report prices the groups separately.
- How accurate is the gold weight?
- As accurate as the geometry. With a ring size or one measurement the range is typically within ±8–12%; hidden metal under stones and hollowed shanks widen the range, which we show explicitly.
- Where does the daily price come from?
- A public spot feed for XAU/USD refreshed daily, converted with daily FX rates into 25 currencies. Admins can override the spot price.