About Diamonds

Only Natural Diamonds

Rhys James works exclusively with natural diamonds.

Formed over billions of years, each stone carries a rarity and presence that cannot be replicated. Their enduring value lies not only in their beauty, but in their origin.

We are proud to support an industry that contributes to the livelihoods of millions globally, with a continued focus on responsible sourcing and long-term sustainability.

Further information on natural diamonds, including their provenance and distinction from lab-grown alternatives, is available here

4Cs

Colour, Clarity, Cut and Carat Weight are known collectively as the 4Cs. Together, they form the recognised framework for assessing a diamond’s quality and value.

Developed by the Gemological Institute of America (GIA), this system provides a consistent and widely understood standard. It allows each diamond to be evaluated and described with clarity and precision.

At Rhys James, the 4Cs are considered as part of a broader, more nuanced approach, where proportion, balance and overall presence are equally important.

GIA Expertise

Rhys James works with GIA-graded diamonds and maintains in-house expertise informed by the standards of the Gemological Institute of America.

Each diamond is considered with care, and selected in close dialogue with the client. Guidance is offered with clarity and discretion, ensuring a process that is both informed and personal.

Investment Diamonds

Rhys James Private Client Services was established to support clients seeking rare and exceptional diamonds of enduring value.

Working discreetly across Australia and Asia, the service is informed by long-standing relationships within the global diamond trade, including an affiliation with Antwerp-based Pluczenik Diamond Company NV, one of the world’s most respected diamantaires and a De Beers DTC Sightholder.

Enquiries may be directed to pcs@rhysjames.com