Sourcing Natural Diamonds in Perth
We do not hold diamond stock in the way we hold our coloured gemstone collection. Instead, every diamond enquiry begins with a conversation: the shape, size, and quality range you are considering, and the context the stone is intended for - an engagement ring, an investment acquisition, or a specific commission. From there, we draw on our trade relationships to source candidate stones, each accompanied by a GIA grading report.
This sourcing model allows us to present diamonds genuinely matched to a brief, rather than limiting a client to a fixed selection. It also means we are not carrying the overhead of unsold inventory, which keeps our pricing genuinely competitive for the quality we provide.
Once candidate stones are identified, we assess each one in person - checking cut quality, light performance, and overall character beyond what the certificate alone conveys - before presenting our recommendations. Contact us with your requirements and we will begin identifying suitable stones.
Why Natural Diamonds
The case for a natural diamond rests on what it actually is: a carbon crystal formed under extreme pressure and heat, at depths of 150 kilometres or more beneath the earth's surface, over periods of time that exceed human comprehension. Brought to the surface through volcanic activity and recovered from alluvial deposits or primary kimberlite pipes, each natural diamond is a geological event made visible.
Laboratory-grown diamonds are physically identical to natural diamonds in chemical composition and optical properties. They are also produced in weeks, in industrial facilities, in quantities that have no relationship to geological rarity. The distinction is not one of quality - it is one of origin, scarcity, and what the stone actually represents. For buyers who understand this distinction, a natural diamond retains a significance that laboratory material cannot replicate.
Natural diamonds also have an established resale and insurance valuation infrastructure that laboratory-grown stones do not. GIA certified natural diamonds with documented provenance are among the most liquid assets in the fine gemstone market. For those acquiring with a long-term perspective, natural origin is not sentiment - it is a practical consideration.
Why Source Your Diamond Through Gemstone WA
GIA certification on every stone
Every diamond we source carries a GIA grading report. This is not optional for us - it is the standard we hold without exception. The GIA report provides an independent, internationally recognised assessment of a diamond's cut, colour, clarity, and carat weight, along with any treatments or fluorescence present. For a purchase of this significance, documentation from an independent laboratory is the minimum standard a buyer should accept.
Access without the limits of fixed stock
Because we source diamonds through our trade network rather than from a fixed retail inventory, we are not limited to what happens to be on hand. If you need a specific shape, a particular cut quality, or a stone within a defined carat weight and quality range, we can identify candidate stones that genuinely match - rather than asking you to compromise on what is available.
Gemmologist-led assessment
Every candidate diamond is personally assessed by our gemmologist before it is presented to a client. We do not rely on certificate comparisons alone. Two diamonds with identical GIA grades can perform very differently in person, and there are characteristics of a diamond's face-up appearance a grading report captures incompletely. We look at the stone itself, not just the paperwork.
No undisclosed treatments
Some diamonds on the market have been clarity enhanced through laser drilling or fracture filling - treatments that improve apparent clarity but are not always disclosed at the point of sale. We do not source treated diamonds, and the GIA reports on the stones we present confirm this. What you are shown is the stone as nature produced it.
Natural Diamonds for Bespoke Jewellery
A GIA certified natural diamond is the foundation of a piece of jewellery that will be worn, valued, and potentially passed on across generations. The setting it goes into should be conceived with the same intention. Our bespoke jewellery service at Gemstone WA begins with the brief - the shape, cut character, and proportions you are seeking - and sources the stone before developing a design around its specific qualities.
We can source diamonds across all the major shapes: round brilliant, oval, cushion, emerald cut, pear, and others on request. Each shape presents the stone's light differently, and the choice of shape affects every subsequent design decision - the setting style, the metal, the proportions of the band. These are conversations worth having with someone who understands the stone, not just the design.
Bespoke commissions at Gemstone WA are undertaken in 18-carat gold and platinum. Every piece is developed in direct consultation, from initial brief through stone sourcing to the finished design, with our gemmologist involved at each stage. Appointments are available at our Perth studio.
