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Platinum 2.06ct oval brilliant royal blue sapphire and diamond ring
Regular price A$23,600Sale price A$23,600 Regular priceUnit price perA -
Platinum 2.61ct F VS1 LAB Grown cushion cut diamond engagement ring with Lab diamonds band IGI Cert
Regular price A$5,750Sale price A$5,750 Regular priceUnit price perA -
Platinum 1.50ct round brilliant cut diamond ring featuring 2=0.59ct bullet diamonds in a claw setting
Regular price A$39,500Sale price A$39,500 Regular priceUnit price perA -
Platinum 1.81ct emerald cut diamond ring in four claw set with baguette diamonds in bezel set
Regular price A$24,000Sale price A$24,000 Regular priceUnit price perA -
GIRASOLE - Platinum and 18ct yellow gold 1.04ct Fancy Intense Yellow oval and round brilliant cut diamond claw set double halo engagement ring
Regular price A$27,500Sale price A$27,500 Regular priceUnit price perA -
Platinum 0.40ct marquise diamond engagement ring
Regular price A$5,060Sale price A$5,060 Regular priceUnit price perA -
Platinum 0.30ct G SI1 round brilliant cut diamond halo ring
Regular price A$5,400Sale price A$5,400 Regular priceUnit price perA -
CAPRI - Platinum round brilliant cut diamond six claw solitaire engagement ring
Regular price A$22,800Sale price A$22,800 Regular priceUnit price perA -
Platinum 0.40ct F SI round brilliant cut diamond trilogy engagement ring
Regular price A$4,500Sale price A$4,500 Regular priceUnit price perA -
Platinum princess and round brilliant cut diamond halo engagement ring
Regular price A$4,900Sale price A$4,900 Regular priceUnit price perA -
Platinum 0.40ct G SI1 round brilliant cut diamond ring
Regular price A$5,600Sale price A$5,600 Regular priceUnit price perA -
Platinum 0.80ct F SI1 pear shape diamond solitaire engagement ring
Regular price A$6,800Sale price A$6,800 Regular priceUnit price perA -
Platinum 0.70ct G SI2 round brilliant cut diamond halo engagement ring
Regular price A$8,200Sale price A$8,200 Regular priceUnit price perA
let us to be part of your story
We invite you to book an appointment for a private consultation tailored to you, at one of our Boutiques in-store, video or phone call. Our friendly Diamond and Gemology expert consultants can help you explore exceptional diamonds, bespoke and luxury engagement rings Sydney and handcrafted designs tailored to your style and story.
frequently asked questions
Why Platinum Endures
For an engagement ring designed to last a lifetime, platinum holds a rare kind of significance. Prized for its purity and strength, it’s typically composed of 95% platinum and 5% alloyed metals, a balance that gives it the resilience that withstands daily wear.
Naturally white in tone, unlike gold, which relies on rhodium plating to maintain brightness, platinum engagement rings remain beautifully white and are less vulnerable to the wear of daily life. A permanence that is quietly powerful.
Chosen for durability, rarity, and heirloom quality, platinum is an enduring symbol of love.
The Pt950 Standard
When researching platinum engagement rings, you’ve likely come across the term Pt950. This simply means the ring is made with 95% platinum. The remaining 5% is made up of alloyed metals to give strength for everyday wear, while still preserving the purity and character that platinum is known for. Other variations of this term include Pt950/Ru or Pt950/Co, which refer to the specific alloy used.
What matters most is that the ring is crafted and cared for with that alloy in mind. Thoughtful workmanship, along with proper serving and resizing, helps protect both the finish and the long-term durability of the piece.
Patina, Polish, and the Reality of Daily Wear
With everyday wear, platinum will naturally develop fine surface marks. This is part of its character, forming a soft patina that’s a reflection of the life lived while wearing the ring, rather than a flaw. However, if you prefer a high-polish finish, that can easily be restored.
Professional polishing brings back a brighter surface, and when combined with regular care, including our complimentary cleaning and inspections, your ring can be maintained in a way that suits how you want it to look.
Engineering a Secure Platinum Setting
Platinum is a popular engagement ring setting because of how it behaves under pressure. Its natural malleability allows prongs to be shaped exactly, hugging the diamond securely rather than relying on tension alone. When proportioned correctly, prongs and galleries work together to protect the stone while maintaining an elegant and balanced look.
Unlike white gold, platinum doesn’t “spring back” once moved. This lack of memory means the metal stays where it’s set, magnifying long-term security when engineered properly. The gallery also plays an important role, acting as a stabilising structure beneath the diamond to support the prongs and limit any movement.
Together, these elements create a setting where security is not left to chance, but factored into the design from the very beginning.
Crafted and Hand-Finished in Cerrone’s Sydney Artisan Workshop
Every platinum engagement ring is brought to life within our Sydney Artisan Workshop, where designers, diamond consultants, setters, jewellers, and polishers work side by side. This in-house approach allows each stage of the process to be carefully managed from concept to final finish.
As one of the largest bespoke, handcrafted jewellery workshops in Australia, supported by over 30 master jewellers, the scope is matched by deep expertise with diamonds set under magnification of up to 10x for exact placement and elegantly secure settings made to last for generations.
The result is an engagement ring shaped by skilled hands, designed with expertise, and finished to a standard that reflects its significance.
Selecting Your Platinum Engagement Ring
There are a few considered decisions to make when choosing your platinum engagement ring. Each choice will shape how the piece looks, feels, and wears over time.
- Style architecture: Start with the setting. Solitaires offer a clean, timeless focus on the centre of the stone. Halos add presence and light. Three-stone designs introduce balance and symbolism.
- Diamond shape: Round brilliant is the classic choice for balanced sparkle. For a more contemporary look, elongated shapes like oval or emerald offer a modern silhouette.
- Fit and lifestyle: Platinum should be sized precisely so that it sits comfortably and securely. Consistency also matters; for instance, using the same alloy during resizing avoids visible joins and maintains a seamless finish
- Diamond origin: Both natural and lab-grown diamonds offer the same visual and physical properties. The choice comes down to personal preference, with transparency and confidence in the selection being key.
For a tailored approach, our Cerrone specialists are available in-store, by video, or over the phone to guide you through each step.
Explore Gold and Platinum Engagement Rings
Discover Cerrone engagement rings in a variety of metal choices to suit your personal style and reflect your moment of everlasting love.


