Exclusive Rare Items & Jewelry

Secure your legacy with unique diamonds and investment jewelry.

At One and Only, we curate an unparalleled selection of rare diamonds and one-of-a-kind investment pieces, ensuring each item is an exclusive legacy. Shop our collection to own a truly unique asset.

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Our Story

The Visionary Behind One and Only

Discover how Evan Roberts transformed luxury acquisitions for discerning collectors.

Close-up of a woman's hand with diamond jewelry, showcasing elegance and luxury of one and only

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

exclusive manufacture

01.

Personalized Consultations

Tailored consultations to explore your unique investment needs.

02.

Exclusive Sourcing

Access to rare and unique diamonds not available elsewhere.

03.

Investment Appraisals

Thorough appraisals for the value and authenticity of items.

GIA certificate of a 5ct natural diamond

Elevate Your Investment Experience Today!

Join a select clientele in securing impressive, singular assets.

Why Choose Us?

Unrepeatable Investments with Guarantee of Exclusivity

rare one & only cape town private client

01

Absolute Rarity

Each item is guaranteed the only one of its kind we manufacture, ensuring true uniqueness.

02

GIA /IGI / EGL Certification

Our diamonds are certified by GIA | IGI |/ EGL guaranteeing their quality and authenticity.

03

Signature Master-Crafted

Every piece is meticulously crafted to meet individual client specifications and desires.

Non-Replication Guarantee

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

Privacy & Secure Acquisition