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Innovators in Luxury


Founded in 1999, Optimum Diamonds, based in New York City, is one of the world's elite houses for rare and exotic natural color diamonds.

Our expertise focuses on bringing to life the highest quality natural color diamonds ever discovered from the earth. Our leading experts study each gem from the beginning starting with rough, incorporating the science of cutting and polishing, and refining poorly cut diamonds to maximize weight and improve color.

Read our story.

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Green Diamonds: Natural Radiance

Visitors to the Natural History Museum of Los Angeles (NHMLA) will have a rare opportunity to see some of the world’s most coveted natural fancy color diamonds at Green Diamonds: Natural Radiance, opening on December 9, 2017. We will have on display a portion of our comprehensive collection of natural green diamonds for this exhibit.