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Custom Jewelry Manufacturing: A Guide for Jewelers

Guru Diam October 15, 2026

Updated Oct 20, 2026 8 min read

Guru Diam makes custom and finished diamond jewelry for jewelers, retailers and designers. Production is in-house in New York and in India. A custom order starts with CAD, which we turn around in 24 hours. Once you approve the CAD, the finished piece takes 4 to 6 working days, and complex pieces can take 2 to 3 weeks. There is no minimum order, and custom orders are tracked in our live order portal.

This hub covers both sides of the bench. The manufacturing section explains CAD approval, casting, quality control and how to price custom work for your customers. The settings section walks through prong, bezel, halo, pavé and the ring styles customers ask for, with notes on which diamonds suit each one. The finished jewelry guides cover tennis bracelets and necklaces, stud earrings, pendants and bands.

We work in 14K and 18K gold, silver and platinum, and keep 3,000+ jewelry pieces in stock, ready to ship. Tennis bracelets and necklaces run from 2 to 30 carats total weight, and the 7-inch bracelet is always in stock. Stud earrings come in all shapes, up to 10 carats total weight.

The ring-style guides run from solitaire and halo settings to trellis, cathedral, tension and east-west settings, with notes on what each one needs from the diamonds. The wholesale jewelry guides cover what retailers stock most: tennis bracelets and necklaces, studs, hoops and huggies, pendants, eternity and wedding bands, and men's jewelry. If you're taking on custom work for the first time, start with the articles on selling custom jewelry without an in-house bench, handling one-off requests profitably and setting realistic delivery promises. The metals and care guides compare 10K, 14K and 18K gold, platinum and white gold, and cover rhodium plating, insurance, and how to clean and store jewelry.

Building a line under your own name? See private label jewelry manufacturing for designers.

Pricing stock pieces before a custom order? See our wholesale lab-grown diamond jewelry prices for solitaire pendants, tennis necklaces, tennis bracelets and studs.

For prices and turnaround, see our custom jewelry manufacturing service (CAD in about 24 hours, finished in 4–6 working days), the jewelry CAD design service at $30 per ring, our casting, setting and finishing work, the custom jewelry cost guide and custom jewelry in Los Angeles.

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Custom jewelry · Wholesale jewelry · Engagement rings · Tennis bracelets · Stud earrings · Book a showroom visit

Start here: the most-read jewelry guides

Custom Diamond Ring 4 to 6 Day Turnaround Wholesale: How a custom ring goes from CAD to finished piece in 4 to 6 working days.
CAD Approval Process Before Casting Jewelry: What to check on a CAD before it goes to casting.
No Minimum Order Custom Jewelry Manufacturing: Ordering one-off custom pieces with no minimum.
Ring Settings for Loose Diamonds Guide: Choosing a setting for a loose diamond.
Types of Halo Ring Settings Guide: Halo styles and the melee each one needs.
Trellis Setting Ring Guide: How a trellis setting holds the center diamond.
Diamond Tennis Bracelet Wholesale Guide: Tennis bracelet weights, lengths and clasps for wholesale buyers.
Diamond Stud Earrings Wholesale Guide: Stud earrings by shape, weight and back type.
Jewelry Manufacturing Process Guide: Every step from design to polish.