About Us

Welcome to The One and Only One®

The One and Only One is an elite group of GIA-certified gemologists and prestigious diamantaires specializing in ultra-rare, one-of-a-kind Natural Fancy Color Diamonds, the most desired and sought-after gemstones in the world.

Only the Rarest of the Rare Natural Fancy Color Diamonds can be called The One and Only One…Fancy Vivid, Fancy Deep and Fancy Intense pinks, reds, greens, blues and yellows…singularly spectacular diamonds of extraordinary color, rarity and provenance.

To receive the distinction of The One and Only One, a Fancy Color Diamond must be accompanied by a certificate from the Gemological Institute of America. But that is only the beginning. Each colored diamond selected by The One and Only One team of specialists equals or surpasses the world-class gems currently breaking records at premier international auction houses, and making their way into the portfolios of the savviest collectors and connoisseurs.

These are important investment-quality Fancy Color Diamonds, diamonds that have doubled or tripled in value over the past ten years.

Unlike colored diamonds that are sold at auction, each Natural Fancy Color Diamond awarded The One and Only One distinction will be made available to Ultra High Net Worth Individuals for a limited time, by appointment only. Upon confirmation of your Request for Private Appointment Application, The One and Only One Natural Fancy Colored Diamond(s) you select to view can be hand-transported by one of our Specialists to a mutually agreed upon high-security location near you.