Lab-Grown Diamonds

Created using pressurized carbon, lab-grown diamonds are chemically, optically and physically identical to natural diamonds. Learn more about lab-grown diamonds with the Bloomingdale's Diamond Guide.

WHAT ARE LAB-GROWN DIAMONDS?

A lab-grown diamond is a diamond gemstone that was made by experts in a laboratory instead of the Earth's crust and they're "COP"—chemically, optically, and physically the same as natural diamonds. And, like natural diamonds, lab-grown diamonds are unique every time. Once developed, lab-grown diamonds undergo the same cutting and polishing process as natural diamonds—and the jewelry brings the same shine and sparkle as natural diamond pieces.

HOW ARE LAB-GROWN DIAMONDS GRADED WITH RESPECT TO COLOR AND CLARITY?

Both natural diamonds and lab-grown diamonds are graded on the same diamond color scale and diamond clarity scale. and are subject to the same level of inspection and scrutiny as natural diamonds.

DO LAB-GROWN DIAMONDS LOOK THE SAME AS NATURAL DIAMONDS?

They have identical chemical, optical, and physical properties (COP). They also have the same scientific refractive index, as well as identical brightness, fire, and sparkle. They look the same to any observer.

HOW LONG DOES IT TAKE TO CREATE A LAB-GROWN DIAMOND?

The growing process can take anywhere from three to six weeks depending on variations like size and color. From there, the "rough" still needs to be cut, shaped, and polished. In all, it's about a two-month process for each stone.

SHOP LAB-GROWN DIAMONDS