Discover Exceptional Rarity in Jewelry

Explore the unparalleled collection of one-of-a-kind diamonds and investment jewelry at One and Only.

A collection of three exquisite diamond rings from One & Only displayed on a textured dark navy surface under a focused spotlight. The set includes a classic round-cut solitaire engagement ring with a pavé-set band, a full eternity wedding band featuring a continuous row of round diamonds, and a modern bypass-style diamond ring. The high-quality diamonds exhibit exceptional brilliance and fire, reflecting the brand's commitment to one-of-a-kind jewelry.

About Us

Crafting Legacies with Exclusive Investment Jewelry

At One and Only, we provide our clients with rare investment pieces that become timeless legacies. Each item is certified and represents unique history, ensuring unparalleled value.

Dedicated to exclusivity, our collection at One and Only has successfully enabled clients to secure one-of-a-kind gems that not only captivate but also offer significant investment potential. Each piece sold guarantees a singular legacy.

One and Only stands as a testament to luxury, delivering unique diamonds that embody both beauty and value. Our commitment guarantees that once an item is sold, it remains unparalleled.

The high-quality diamond exhibitsexceptional brilliance and fire, reflecting the brand's commitment to one-of-a-kind jewelry.

Our Journey

Kirsten Roberts Close-up of a sparkling diamond for my darling wife Kirsty Roberts

From Vision to Reality: The One and Only Story

Founded by Evan Roberts of Diamgold, One and Only was established to redefine luxury jewelry acquisition. With a focus on singularity, we built South Africa’s premier digital vault for unique investment diamonds and jewelry, ensuring every piece is irreplaceable, creating a legacy for each client.

One & only

Step into the World of Unique Acquisitions

Step-01

Personalized Consultations

We begin with a tailored consultation to understand your unique desires.

Step-02

Exclusive Selection

With our vast network, we curate selections carefully tailored to your preferences.

Step-03

Secure Ownership Transfer

Finally, we facilitate a seamless ownership transfer for your singular acquisition.

Non-Replication Guarantee

No second unit of this design will ever be manufactured, commissioned, or authorized by this house.

Privacy & Secure Acquisition
Scroll to Top