Underwood’s is a proud official partner of the Natural Diamond Council. We believe that since a natural diamond was formed in the earth up to 3 billion years ago and is a finite product, it is therefore much more valuable than a man-made diamond and unlike man-made diamonds have shown to hold their value over time. For this reason, we do not sell lab-grown/man-made diamonds. Underwood’s has state of the art technology that we use to test and verify all of our diamonds are of natural origin, so you can be assured that any diamond you purchase from us (big or small), was formed naturally in the earth and a finite miracle of mother nature.

The mission of the Natural Diamond Council is to advance the integrity of the modern diamond jewelry industry and inspire, educate and protect the consumer.

Diamonds Today: The Evolution of Natural Diamonds

While the diamond industry is made up of independent businesses all around the globe, we come together in a shared appreciation for the Earth, our employees, and the local communities who help us bring the beauty of natural diamonds to those who love them.

Beyond the 4 C’s

The seven members of the Natural Diamond Council have pledged to a common goal to safeguard the natural world and ensure sustainable management of precious natural resources—here’s how.

Diamonds & Sustainability

A behind-the-scenes look at the people, places, and positive impact of the diamond industry and the ongoing global efforts in diamond sustainability. Here you will learn more about what industry leaders are doing to make sustainability a priority.