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The Premier Custom Jewelry Partner for Independent Retailers

GJS is the preferred custom design & manufacturing partner for jewelers seeking excellence and reliability. 

  • A white gold necklace studded with diamonds that spells out GJS on a transparent background
SKetch CAD Finished
  • a circular 40mm diameter yellow gold coin with a generic logo and a textured finish surrounded by a halo of alternating blue sapphires and white diamonds set in white gold hanging on a gold chain on a transparent background

Crafted in the NYC Diamond District

GJS creates a seamless experience for our retail partners by providing quick turnaround times, unwavering standards, and competitive pricing. With over a century of combined experience and access to the talent and resources in the Diamond District, we reliably deliver high-quality craftsmanship to jewelers across the country.

retail jeweler woman in a luxury jewelry store with two customers a man and a woman designing a gemstone necklace and earrings

About Our Service

We strive to delight our customers by doing what it takes to deliver on time, at cost, and above expectations. We provide our partners with the tools necessary to close the sale and over-deliver. We take pride in our customers telling us that we have become an extension of their business and an engine for growth.

a circular 40mm diameter yellow gold coin with a generic logo and a textured finish surrounded by a halo of alternating blue sapphires and white diamonds set in white gold hanging on a gold chain on a transparent background

Same-Day Price & Delivery Estimates

We commit to providing estimates within 24 hours. In most cases we will provide estimates within 90 minutes. We understand the urgency when a customer is ready to buy and is waiting to find out how much & when.

Next-Day, No-Fee Sketches & CADs

Our lead-time for sketches & CADs is 48 hours but next-day service is available upon request. We do not charge for CADs and welcome an unlimited number of modifications; our objective is to provide the tools needed to close the sale.
an asian female jewelry designer sketching designs in color in a jewelry workshop dimly lit with ambient light with jewelry manufacturing tools and jewelry on her desk and an apple desktop computer with jewelry CAD software open
A male and female jeweler of indian origin are attentively working on a jewelry bench in a cutting edge jewelry manufacturing studio The studio has a large window behind the jewelers The studio is on the 20th floor of the building Outside its night t-1

Two-Week Turnaround on Confirmed Orders

We typically deliver orders within 3 weeks of confirmation. In most cases we can commit to 2 week turnarounds for no additional charge if requested. Put us to the test!

The Finest Materials & Premium Quality

We responsibly source all of the materials we use in manufacturing. We have partnerships with the world's best jewelers and have access to specialist manufacturing infrastructure to execute custom projects of any complexity.

Utilize Customer's Stones or Your Own

We encourage our partners to utilize their own stones; no extra charge. We understand the desire to repurpose family heirlooms and that jewelers want to use diamond & gemstone from inventory to fill the showcase. 

Made in the USA

100% of our custom manufacturing and assembly is in the USA, enabling precise lead-time estimates for expedited order fulfillment. We QC every piece in our NYC headquarters. All of our pricing is tariff-free.

An American woman in a jewelry store showing the designer vintage family heirlooms that she wants to repurpose into a new modern design The designer is sitting down sketching a design with the store owner watching over her shoulder looking very pleas-1

Not Just Custom...

In addition to our custom design service, we offer the following products & programs to our retail partners.

  1. Fast turning, brilliant value diamond essentials
  2. In stock, one-of-a-kind statement pieces
  3. In stock, innovative diamond fashion & semi-mounts
In the heart of a lavish retail space an exquisite display of diamond jewelry captures the eye featuring an array of elegant and opulent necklaces rings and bracelets that sparkle under soft ambient lighting Each piece is strategically arranged on el

Hand Crafted by GJS

Some of our favorites from over the years!

Butterfly
5 stone bezel
Spear pendant
Emerald Halo Engagement Ring
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Huge oval center engagement ring with sapphires
Fancy shapes
Car!!!
Tri color fancy shapes
Off center emerald, round, and baguette
Butterfly multicolor
North south baguette wedding band
Twist flower halo
Rolling ring
Diamond studded mens ring
Pear halo spread shank
5 stone emeralds

Contact Us

Have a question about our custom jewelry services or want to discuss a special project?