Lab-grown diamonds at bench price. Your ring, made on 47th Street.

We're the factory, not the storefront.

Luxury houses send us their hardest pieces. CADCAM Designs has manufactured for jewelry brands and independent designers who can't afford a mistake. There is no showroom rent, no sales floor and no middleman in your price — only the bench.

One fixed margin on every stone. Every diamond on our list is priced from that day’s wholesale sheet with the same margin. No negotiating, no “call for price”, no markup based on how much you seem willing to pay.

Rings priced in writing. One price for the finished ring, in writing and held for 7 days, before we start. Nothing is cast until you approve the render.

From stone to finished ring, under one roof.

Most online jewelers sell you a stone from one vendor and a mount from another, assembled by a third. Here one person at 36 West 47th Street manages the CAD, the wax print, the casting with our casting partner, the setting and the polish — and you approve each step.

• Choose the stone. Browse the live list, or tell us your spec and we pull three to five candidates. See them on 360° video or in person at the atelier.
• Design & render. We model your ring in CAD and send a photoreal render — and, if you want it, a printed try-on model. You approve. Nothing is cast until you do.
• Print & cast. A 16-micron wax print, cast by our casting partner in 14K, 18K or platinum.
• Set & finish. Hand-set and polished at the bench. Insurance appraisal on request.
• Deliver. Pick it up in the Diamond District or receive it insured. Typically two to four weeks from approved render; rush available. You get the date in writing before production.

One price for the finished ring. The rest is included.

One price, in writing. One number for the finished ring: stone, setting, metal and finishing. You get it in writing, held for 7 days, before you pay anything.

30-day free returns on loose diamonds. Free insured shipping both ways (US). See the stone first: 360° video or in person. Price-match on the same certificate. Lifetime clean, check & tighten.

• Photoreal CAD render with one revision round — worth $350
• Printed try-on model of your design — worth $150
• Written delivery date before production begins
• First resize free within 60 days — worth $150
• Lifetime clean, check & tighten at the atelier — worth $400+
• Insurance appraisal on request — worth $120

Straight answers

Are lab-grown diamonds real diamonds?

Yes. They are chemically, physically and optically identical to mined diamonds, and they are graded by the same laboratories on the same 4Cs. The only difference is where the crystal grew, and that is disclosed on every certificate.

Why are your diamond prices so far below Blue Nile or Brilliant Earth?

Because we are a manufacturer, not a retailer. We buy from the same wholesale lists the trade uses and add one fixed margin. There is no showroom, no sales floor and no advertising budget built into the stone. Compare the same IGI report number anywhere you like.

Do lab-grown diamonds hold their value?

Honestly: don't buy one as an investment. Wholesale prices have fallen for years and may keep falling, which is exactly why a stone that cost thousands a few years ago now costs hundreds. Buy it for the ring, and put what you save into a mount you will wear for decades. That is what lasts.

IGI or GIA?

Our white-diamond inventory is IGI-graded, the laboratory that grades most lab-grown diamonds sold worldwide, and every stone links to its report. GIA-graded stones can be sourced on request.

Can I see the stone before I buy?

Yes. Many stones have 360° video, any stone can be viewed in person at 36 West 47th Street by appointment, and every loose diamond carries a 30-day return.

How long does a custom ring take?

Typically two to four weeks from the approved render. Rush service is available. You receive the delivery date in writing before production begins.

Can you set a diamond I already own?

Yes — lab-grown or natural, in a new design or a re-set of an existing ring.

Do you ship outside New York?

Yes, fully insured, anywhere in the United States. International shipping is available on request.

What if the finished ring doesn't look like the render?

We remake it at no cost. You approve the render before we cast, and the render is the contract.

Do prices change?

Stone prices track the wholesale market and refresh daily. A written quote holds its price for 7 days.