Our Promise

All of our products are responsibly sourced, and we use our scale for good to advance human rights while preserving our planet.

Inspiring Love at Every Step of a Natural Diamond’s Journey

Responsibly Sourced

All our certified diamonds are tested and verified, and all our precious metals and gems are responsibly sourced.



We proudly stand behind the value of each diamond we sell with a lifetime guarantee* and trade-in privileges on all diamond purchases. As a proud and Founding Member of the Responsible Jewellery Council, KAY Jewelers' parent company Signet uses its scale for good to advance human rights while preserving our planet.



This is our Promise to you, so you can Celebrate Life and Express Love with jewelry that was sourced with the highest standards in mind, honoring people and our planet.

*For guarantee to remain in effect, you must have your diamond inspected and have the inspection documented every 6 months by an authorized representative. Lab-grown diamonds and lab-grown gemstones will be replaced with lab-grown diamonds and lab-grown gemstones. See full details at kay.com/kay-lifetime-diamond-gemstone-guarantee

Kay diamond tennis bracelet paired with a diamond engagement ring and layered diamond necklace, showcasing radiant fine jewelry with timeless sparkle in an elegant lifestyle setting.
Kay engagement ring settings in white and yellow gold displayed alongside loose round, oval, pear, marquise, princess and emerald-cut diamonds, showcasing diamond shape options for creating a personalized engagement ring.

At The Source

To help our customers find the perfect symbols to express their love, we source diamonds from all over the world — from the deserts in southern Africa to the barren white landscape of the Canadian Arctic. We work with global partners in some of the most remote places on the planet to ensure high standards are met when sourcing Earth’s natural creations.



Our parent company Signet is proud to have either co-created or co-founded a number of key global initiatives that involve the responsible sourcing of diamonds, colored gemstones, and precious metals, and is proud to provide our customers the confidence they need in making such a special purchase.

Held To A Higher Standard

KAY’s parent company is one of 14 Founding Members of the Responsible Jewellery Council, the world’s leading standard-setting organization for the jewelry and watch industry since 2005. The Responsible Jewellery Council boasts more than 1,600 members representing all aspects of the supply chain from mine to retail.



We require that all of our strategic and key suppliers in our supply chain become active members of the RJC and adhere to its strict standards. Today, we remain a participant in the RJC's Sustainable Development Goals Taskforce and numerous committees, actively ensuring adherence to globally responsible business practices.

Kay Responsible Jewellery Council logo displayed on a blue background, representing the jewelry industry's commitment to responsible sourcing, ethical business practices and sustainable standards.
Kay World Diamond Council logo featuring a stylized blue diamond icon and organization name, representing industry leadership in responsible diamond sourcing, ethical practices and consumer confidence in natural diamonds.

Transparency In A Complex System

Diamonds can be traded many times between each step of the supply chain. We work to ensure the diamonds used in our jewelry come from companies who act responsibly. KAY's parent company is an active, founding member of the World Diamond Council, a non-profit trade association established in 2000 to combine efforts in the global diamond industry to support the Kimberley Process, an international certification program that regulates trade in rough diamonds.



We urge everyone with a stake in our industry to continue with, or join us in, the pursuit of integrity, transparency, and accountability by joining the Responsible Jewellery Council and the World Diamond Council.

Confidence Instilled By Experts

Any of our certified diamontologists can guide you to your perfect diamond. In fact, KAY’s parent company employs and trains more certified diamontologists and gemologists than any other jewelry retailer in the U.S., Certified by the Diamond Council of America. Each year, KAY’s jewelry experts guide millions of customers to the diamonds, gemstones, and precious metals that enable them to Celebrate Life and Express Love.
Kay diamond station necklace featuring five round brilliant diamonds connected by a delicate white gold chain, showcasing timeless elegance and everyday diamond sparkle.
Kay diamond bridal ring sets featuring marquise-cut and pear-shaped diamond engagement rings with matching diamond wedding bands in yellow gold and white gold, displayed on elegant white fabric.

A Lifetime Of Sparkle And Beyond

A diamond’s brilliance, as well as its impact, should live for generations. Services like jewelry care and repair as well as diamond jewelry trade-in programs enable customers to express their love for others and themselves while knowing that many parts of jewelry placed in our care is reused, resold, or repurposed (we even save the “diamond dust” created from diamond polishing, which is reused in items like drills and flat-screen TVs).



The principles of the circular economy are built into our business model to extend the life of nearly every piece of jewelry we touch.

KAY Diamond Promise | Kay