*By the Sheladiya Diamond team, Surat. Last updated 1 November 2026.*

A private-label lab-grown diamond collection is a ready-to-sell range of jewelry that a manufacturer designs, samples and produces for you, sold under your own brand name. You skip the factory, the diamond sourcing and the setting team. You keep the brand, the pricing and the customer.

This guide covers how we see these launches work from the manufacturing side, and what to decide before you brief a partner.

Why jewelers launch their own lab-grown range

Buyers now ask for lab-grown diamonds in store and online. A private-label range lets you answer with a consistent, branded offer instead of reselling the same catalog designs as everyone else.

It also gives you control of margin. You set the retail price against a known per-carat cost. Our price list is published, so you can model costs before you speak to anyone.

Step 1: Define the range before you brief a manufacturer

Start small and specific. A first collection of 10 to 20 designs usually sells better than 60 designs with thin stock in each.

Decide four things:

1. Who is the customer? Bridal, daily wear, gifting or fashion.
2. Which price band? Work backwards from the retail price to the diamond and gold budget.
3. Which pieces? Solitaire rings, studs, pendants, tennis bracelets, bands.
4. Which metal? 14k or 18k gold, or platinum. Gold cost moves daily, so ask your maker how it is priced.

Step 2: Set the diamond specification

Diamond specs drive both cost and consistency. Write them down per design, not per collection.

  • Center stones: shape, carat weight, color, clarity and cut. For stones you will pass on to customers, specify an IGI, GIA or GCAL report.
  • Side stones and melee: calibrated sizes and a color and clarity range, so every piece in a run looks the same. See our guide to [melee sieve sizes and pieces per carat](/blog/lab-grown-melee-diamonds-sieve-sizes-weights-pieces-per-carat).
  • Pairs: earrings need matched stones. Ask for matched pairs, not two stones from a parcel.

Consistency matters more than chasing the top grade. A customer who buys two pieces from you should see the same white, clean stones in both.

Step 3: Design, CAD and sampling

The usual process runs in this order:

1. You share sketches, reference photos or a bestseller you want reworked.
2. The designer builds CAD and you approve every detail: prongs, shank width, stone seating, finish.
3. A sample is handcrafted in gold or platinum.
4. You check fit, stone setting, hallmarking and finish, then request changes.
5. You approve the sample and the production order is placed.

Sampling is where problems are cheapest to fix. Check the sample on a hand or ear, not only on a photograph.

Step 4: Certification, hallmarking and labelling

Decide early what each piece will carry. Larger center stones normally ship with a grading report. Smaller pieces often use a brand card that states the diamond is lab-grown, with total carat weight and the color and clarity range.

Always disclose lab-grown clearly on tags, packaging and listings. Rules on hallmarking and disclosure differ by country, so check the requirements for your market before printing packaging.

Step 5: Plan production and stock

Ask your manufacturer how repeat orders work. A good partner can hold design files and diamond specs so reorders match the first run.

Questions to ask any supplier:

  • What are the minimum quantities per design?
  • How long do sampling and production each take?
  • Who owns the CAD files and moulds?
  • How are shipping, insurance and duties handled for my country?
  • Can you keep a standard parcel in my specification for reorders?

We give minimum quantities and lead times per project, because they depend on the design, metal and stone sizes. Send your brief through the contact page and we will respond with specifics.

What we do at Sheladiya Diamond

We are a Surat manufacturer of CVD lab-grown diamonds, working since 2017 and building on more than 30 years of founder experience in diamond polishing. Because we cut and polish the diamonds ourselves and make the jewelry, one team handles stones, design and setting. See services for private-label and custom manufacturing, or browse collections for design references.

Our retail brand, Zarna Jewels, is built on the same production, so we see what end customers actually buy.

FAQ

What is the difference between private label and custom jewelry?
Custom jewelry is made to your individual design. Private label is a full collection, developed and produced under your brand, often mixing your designs with the manufacturer's proven styles.

Do I need to buy a large quantity to start?
Quantities depend on the design and metal. Ask for minimums per design when you request a quote.

Can the diamonds be certified?
Yes. We supply stones with IGI, GIA or GCAL reports, and non-certified stones for lower price points.

Which countries do you supply?
We work with trade buyers in India, the US, UK, Canada, Australia, New Zealand and Germany. Tell us your destination for shipping details.

How do I start?
Send your target customer, price band, piece types and any reference images through the contact page.