We confirm every code and deal on this page on Grown Brilliance's own pages and in posts about it, and each says when. 10 of 10 still work — the rest are listed below with the date they stopped.
First-time customers can join the Guest List through the text or email list to receive the offer.
For first-time customers; first purchase must be $1,000 or more.
Free shipping applies to all items shipped to U.S. addresses. A signature is required for delivery.
For items shipped to United States addresses; expedited shipping options cost extra.
The pendant features F-color, SI-clarity lab-grown diamonds. The qualifying purchase can be made online or in store.
Purchase amount is calculated before tax and shipping and after discounts; Extend plans do not count. If a qualifying return drops the remaining order below $2,000, return the pendant or its $499 value will be deducted from the refund. Cannot be exchanged or returned for a refund.
Applies to lab diamond statement pendants. Orders of $75 or more.
Applies to lab grown diamond jewelry.
Applies to fine jewelry made with lab diamonds. Orders of $1500 or more.
Requires a minimum order of $50.
Includes engagement, promise, and wedding bands.
A classic lab grown diamond stud pair that suits everyday wear.
See it on Grown Brilliance
A timeless four-prong lab grown diamond tennis bracelet for daily wear.
See it on Grown Brilliance
A floating round lab grown diamond band that pairs well with any engagement ring.
See it on Grown Brilliance
A statement four-prong lab grown diamond necklace for special occasions.
See it on Grown BrillianceOur estimate of when Grown Brilliance's biggest discounts of the year happen, month by month. November is the month to wait for.
Start with the one verified most recently, not the biggest number.
Select the cart icon to bring up the cart drawer.
Type your code into the promo code field in the cart, then apply it. A code can also be entered in the cart.
If it didn't, tell us — a code shoppers report as failing moves to the bottom of the list.
The post-Thanksgiving kickoff of the U.S. holiday shopping season.
The online-focused sale day following Thanksgiving weekend.
The Christmas-season gift-buying period.
New-year clearance and post-holiday sales.
Six questions people actually ask us.
Yes. Through Heroes Rewards, medical workers, teachers and first responders (police, fire and EMT professionals) receive a 10% off coupon for their first order after verification. Later orders may get a discount at Grown Brilliance's discretion when checked out with the verified email address.
Yes. U.S. military members, including active duty, retirees, disabled veterans and registered dependents, get a coupon code for 10% off their first order after verifying status. Later orders may get a discount at Grown Brilliance's discretion when checked out with the verified email address.
Online and in-store purchases of $2,000 or more made from 09/23/2026 at 12:01 AM receive a free 1 ctw lab grown diamond heart pendant in sterling silver (retail value $499). The $2,000 is measured before tax and shipping and after discounts, and Extend protection plans do not count toward it. The offer is one-time use per customer and valid while quantities last.
Yes, through Affirm for U.S. customers, though it may not be available in every state. Affirm offers monthly payments for up to 36 months at rates as low as 0% APR, with no late fees and early payoff available.
Yes, free UPS 2nd Day Air shipping on all items to U.S. addresses, with a signature required for delivery. UPS Next Day Air is available for an extra charge, and shipping to the listed international countries is free, with duties paid by Grown Brilliance.
Price match applies only to loose lab grown diamonds, not finished jewelry, and not to Truly Custom special orders. The request must be made before purchase, with a link to a publicly visible competitor price sent by email to [email protected].
Grown Brilliance and the Grown Brilliance logo are trademarks of their owner, shown here solely to identify the store and its offers. Couponly is an independent service and is not affiliated with, endorsed by, or sponsored by Grown Brilliance. We may earn a commission when you shop through our links. See our Terms.
