Natural diamonds are formed over billions of years deep below the earth’s surface, under extreme pressure and high temperature. They rise and become accessible by volcanic eruption.

Lab-grown diamonds are produced in a lab within weeks or months, using specialized technology that mimics the extreme heat and pressure of a natural diamond’s growing environment.

Lab-grown diamonds (also referred to as engineered, man-made, or lab-created diamonds) possess the same optical, chemical, and physical properties as a natural diamond. Natural vs. lab-grown diamonds are virtually indistinguishable to the untrained eye. What sets them apart, however, are their origin and the time they took to form.

The best way to clean diamond rings, no matter what your ring’s setting and/or metal type, is to make a solution with warm water (almost hot) and dishwashing soap. Soak your ring for about 20 to 40 minutes, very gently brush the stone with a very soft toothbrush, and then rinse under warm running water. Rinse thoroughly, and if needed, repeat. Be sure to take your time—intense brushing can loosen or damage diamonds. A little soak in KAY's fine jewelry cleaner is also an effective regular cleaning method.

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.

At KAY, we provide a Lifetime Diamond & Gemstone Guarantee to protect your stones. We recommend adding the optional Forever Cherished Lifetime Protection Plan to cover repairs and/or maintenance on the metal of your ring to enjoy true worry-free wear.