A jewelry store adds lab-grown diamonds successfully by treating it as a 90-day program with a defined opening case, a supplier that can reorder the winners, and documentation that keeps every ticket compliant. Stores that buy a wide spread of single pieces and wait a year to judge it usually end up with a case of slow movers. This guide is the plan: what to buy, in what depth, from whom, and when to reorder.
If you are still deciding whether to carry the category at all, start with how to add lab-grown diamond jewelry to your store and how lab-grown margins work. This article picks up from there.
The 90-day plan
| Phase | What happens | Decision at the end |
|---|---|---|
| Days 1-14: set up | Open a trade account, pick the opening assortment, agree grading standard and reorder lead time in writing, train staff on one script | Opening order placed |
| Days 15-45: launch | Case goes in with its own signage and tickets; track sell-through by style weekly, not by category | First reorder of any style that sold two or more units |
| Days 46-90: tune | Reorder winners, swap the two slowest styles for new ones in the same family, add one private label style if the case is working | Keep, expand or exit the category on numbers |
The opening assortment
A focused opening case of roughly 20 to 30 pieces across four families is enough to learn what your store sells. The depth matters more than the breadth: two or three weights of the same tennis bracelet teach you more than ten unrelated styles.
| Family | Pieces | What to buy | Why it is there |
|---|---|---|---|
| Tennis bracelets | 6-8 | One classic design in 2-3 carat weights, in two gold colors; one bezel-set version | The trade-up engine; the piece customers compare and then buy bigger |
| Studs and huggies | 6-8 | Round studs in 2-3 sizes, one fancy shape (oval or pear), one pair of huggies | Gifts and add-ons; the fastest turns in the case |
| Fashion and fancy-shape rings | 6-8 | Oval, emerald and pear solitaires, one toi et moi, one eternity band | Shows what lab-grown makes affordable; drives the design conversation |
| Statement piece | 1-2 | A five-stone bracelet or a tennis necklace | Anchors the case visually and sets the ceiling price |
Buy from stock where you can so the first reorder arrives quickly, and ask which styles are made to order so you know the lead time before a customer asks. At Nivelle, core styles ship from stock and made-to-order pieces run 4-6 weeks.
Grading and documentation
Set the standard once, in writing, with your supplier, and never buy below it. A workable standard for an independent store is E-F color, VS clarity or better on every piece. Once you move to bulk or repeat program orders, add independent IGI or GSI screening of the finished pieces: the report tells you what was graded, screening tells you what was set.
Every ticket, invoice, appraisal and receipt should describe the piece as lab-grown, laboratory-grown or laboratory-created. Our FTC checklist for selling lab-grown diamonds covers the disclosure rules, and IGI vs GIA lab-grown reports covers what to ask for.
Choosing the supplier for the program
The supplier decides whether the 90-day plan is easy or painful. Four questions settle it.
- Can they reorder the exact piece? Same style, same grading, same finish, every time. Ask for the reorder lead time in writing.
- Do they price separately from natural, and is the price gold-indexed? A synced price sheet that updates with gold keeps your margin honest.
- Can the case carry your name? Once a style proves itself, a private label version with your hallmark is harder for a customer to price-compare online. Ask what the minimum is per style.
- Who inspects before it ships? A supplier that inspects every piece in the US before shipping saves you the returns conversation.
Our comparison of wholesale lab-grown diamond jewelry suppliers puts six suppliers side by side on exactly these points.
How to price and present it
Price lab-grown on its own schedule, from your cost and your positioning, not as a fixed discount to natural. Keep the category in its own case or section with its own signage so the natural diamond business keeps its perceived value and so disclosure is built into the layout rather than left to the salesperson.
Give the team one script: a laboratory-grown diamond has essentially the same optical, physical and chemical properties as a mined diamond but is grown in a laboratory, its origin is always disclosed, and it usually costs less for a similar look. Natural diamonds are rare and formed over geological time. The customer chooses what matters to them.
Frequently asked questions
How can a jewelry store add lab-grown diamonds to its assortment?
Open a trade account with a supplier that reorders consistently, buy a focused case of 20 to 30 pieces across tennis bracelets, studs, fancy-shape rings and one statement piece, track sell-through by style for 90 days, then reorder the winners and swap the slowest styles.
How much should a store spend on an opening lab-grown order?
It depends on the store and the gold price on the day. The useful rule is depth over breadth: fewer designs in more than one size or weight, so you can see trade-up behaviour, rather than many single pieces.
Which wholesale lab-grown diamond jewelry supplier has the best prices for retailers?
On finished jewelry, suppliers that manufacture and sell direct are usually less expensive than catalog distributors, because there is no distributor margin built into the price. Nivelle produces through its own manufacturing network and sells direct to approved trade accounts, and its trade pricing has proven to be 15-30% below larger supply houses on like-for-like pieces.
Which lab-grown pieces sell first in an independent store?
Studs and tennis bracelets turn fastest in most independent stores. Fancy-shape rings carry the design story and the higher tickets.
Should an online jewelry retailer add lab-grown the same way?
Yes, with one change: online retailers should launch with styles available in several gold colors and sizes, and lean on supplier-provided product photography and video. Nivelle supplies images and video for every style it produces for a client.
When should a store move to private label lab-grown?
After the first 90 days, once two or three styles have reordered. Put your hallmark on those first; they are proven sellers and the private label version protects them from online price comparison.
Build your lab-grown program with Nivelle
Nivelle supplies lab-grown and natural diamond jewelry to established independent jewelers, multi-store retailers and jewelry brands, from stock or made to order, E-F / VS+ graded, inspected 100% in New York, with IGI or GSI screening on bulk orders, and private label when you are ready. Because we produce through our own manufacturing network and sell direct to retailers, with no distributor layer in the price, our trade pricing has proven to be 15-30% below larger supply houses on like-for-like pieces. Recycled gold is available on request. Wholesale pricing is visible on the site once your trade account is approved; a Tax ID and trade references are required to transact.
Become a retail partner, schedule a 15-minute introduction, or email sales@nivelle.nyc. See the lab-grown diamond program and trade terms and browse wholesale lab-grown diamond jewelry.
Nivelle, New York. A family business since 1978.
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