Machine Set Jewelry · NYC Diamond District

Precision ring
manufacturing.

Machine-set from seamless extruded tubing blanks. Porosity-free. Private label available.

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NYC Diamond District
25+ Years Manufacturing Experience
JBT Verified Jewelers Board of Trade
Trade Only Approved Accounts
Eco Friendly Responsible Manufacturing
Private Label Your Brand, Our Craft
Our Story

25 years. One focus.
Machine-set precision.

ND Channel Corp. has been manufacturing machine-set jewelry from the heart of New York City's Diamond District since our founding. We specialize in one thing — and we do it better than anyone.

Unlike generalist manufacturers, we focus exclusively on anniversary bands, eternity bands, and wedding bands — produced from seamless extruded tubing blanks that eliminate porosity at the source. Our custom-modified machines achieve tolerances and consistency that hand setting simply cannot match.

ND Channel manufacturing workshop NYC
48 W 48th St, Suite 601
New York, NY · Diamond District
Products

Three product lines.
One standard of quality.

Every ring manufactured from seamless extruded tubing — eliminating porosity at the source. Consistent quality, every run.

Anniversary bands
Band Type 01
Anniversary Bands
Channel-set and pave configurations with precise stone alignment. Engineered for consistency across every production run.
Channel Set Pave All Widths
Eternity bands
Band Type 02
Eternity Bands
Full and half eternity bands in standard and custom configurations. Machine precision ensures uniform stone placement throughout.
Full Eternity Half Eternity All Sizes
Wedding bands
Band Type 03
Wedding Bands
Classic and contemporary styles for men and women. Plain, milgrain, hammered, and diamond-set — all karat weights available.
Men's & Women's Plain & Set Milgrain
Manufacturing

The difference 25 years
of precision makes.

25 years of precision jewelry manufacturing NYC
01
Seamless Blank Manufacturing
All rings are cut from extruded tubing — not cast. This eliminates porosity, the leading cause of jewelry failure in mass production.
02
Eco-Friendly Process
Our manufacturing process minimizes waste and uses responsibly sourced materials. Available in all standard and custom alloys.
03
Supply Flexibility
Work with your own gold, platinum, or stones — or use our verified supply chain. Same quality standard, either way.
04
Repair & Finishing
Cleaning, ring repairs, and custom finishing services available alongside all new production orders.
Materials

All alloys.
All configurations.

Silver, Palladium, Platinum, 10K–18K Gold (White, Yellow, Rose). You supply materials or we supply ours.

10K
Gold
White
Yellow
14K
Gold
White · Yellow
Rose
18K
Gold
White · Yellow
Rose · Pall.
Plat
Platinum
950
900
Pall
Palladium
Palladium
Gold
Ag
Silver
Sterling
925
Manufacturing Standards

The difference precision
manufacturing makes.

01
Seamless Blank Manufacturing
Rings cut from extruded tubing — not cast. Eliminates porosity, the leading cause of jewelry failure.
02
Custom Modified Machines
The most modern, advanced, precise equipment available to the jewelry industry — often custom modified for our production.
03
Your Materials or Ours
Supply your own gold, platinum, or stones — or use our verified supply. Same quality standard either way.
04
Repair & Cleaning Services
Jewelry cleaning and ring repairs available alongside all new production orders.
Channel-set diamond eternity band — machine manufactured
Quality inspection
Our Promise
We stand behind every piece we manufacture.
— Porosity-free — seamless extruded blank manufacturing
— JBT verified — 25 years of trade accountability
— Friendly service, fast turnaround, easy online ordering
Contact Us
FAQ
Common questions.
What is the minimum order quantity?+
Contact us directly for minimum order requirements.
What are your standard lead times?+
We offer fast turn around times. Contact us for specifics based on your order size.
Can I supply my own gold or platinum?+
Yes. You supply materials or we supply ours. Silver, Palladium, Platinum, 10K–18K Gold.
What makes machine-set different?+
Precision machinery for exact stone placement — tighter tolerances, uniform alignment, porosity-free.
Do you offer private label?+
Yes. Full private label manufacturing. We produce under your brand name.
Do you do repairs?+
Yes. Jewelry cleaning and ring repairs alongside all new production orders.
Support

International Ring
Size Conversion

Find My Size
US Size
US · CA · MX UK · AU · NZ EU · FR DE · AR CH · ES

For unique sizing queries, contact us directly.

Contact

Get in touch.

Address
48 W 48th St, Suite 601
New York, NY 10036
Phone
(212) 221-1661
Fax: (866) 847-7725
Hours
Mon – Fri
8:00am – 5:00pm EST
Trade Account
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