Where do our diamonds come from?

Designs in the collection are available in the following diamond and gemstone shapes: round brilliant, cushion, oval, emerald, pear, princess or square, marquise, Asscher, radiant, heart, hexagonal and even antique cuts like rose cut, old mine cut and Old European cut diamonds. We offer both naturally mined diamonds and lab grown diamonds. All of our engagement ring centre diamonds are GIA or IGI graded and certified. While all other diamonds featured in our products aren’t always certified, simply ask your Design Consultant and we can do our best to source you options with certification. In regards to natural diamonds, we source diamonds globally from diamond manufacturers that comply with the United Nations Kimberley Process in order to affirm all of our diamonds are ethically sourced. To learn more about the different sources of diamonds, from lab-grown diamonds to CanadaMark, visit our guide to diamonds .

How do you figure out you or your partner's ring size?

You’ve decided to pop the question and take the first step to spending the rest of your life together, but what ring size is my partner?! We have some invaluable advice for choosing that perfect ring available on our ring size guide – even if you’re planning a surprise proposal.

Do we get inspired by celebrity engagement rings?

Engagement rings are so special because they’re more than just a jewellery purchase. They’re a tangible mark of the intention to get married, while a wedding ring symbolises the union. We understand how sentimentally valuable an engagement is and we love that this symbol of commitment can be so personal to each couple. As designers, we’ve always looked to the high-profile jewellery of celebrities, royals, and cultural icons to kickstart our creativity. And lots of our customers feel the same! Browse through our collection of celebrity engagement ring guides to how you can incorporate some new ideas into a design that suits your price point. Additionally, we’ve collected some of the most popular bespoke designs from our Instagram page into one place so that you can get the design ideas flowing. Browse our ‘As Seen on Instagram’ page here .

Platinum Cushion Diamond Engagement Rings

Drawing together timeless design with modern artistry, our collection of platinum cushion diamond engagement rings offers you an exciting selection of unique rings, allowing you to find a design that speaks to love you share with your partner. Certain styles determine the overall silhouette and impact of your engagement ring, so take time to consider if a solitaire, pavé, halo, or trilogy design is the one for you. We recommend a cushion diamond for anyone looking for a classic look with a unique spin, as these diamonds feature a brilliant facet structure combined with a highly original squared shape. Our designers draw creative inspiration from all over to bring you a diverse range of platinum cushion diamond engagement rings, so explore our full selection of design styles below.

37 rings found

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Allure

Cushion diamond centre and pavé diamond halo engagement ring set in platinum

from US$2,065

Dulcet

Cushion diamond centre and fishtail pavé diamond band engagement ring set in platinum

from US$1,365

Demure

Cushion diamond solitaire engagement ring set in platinum

from US$945

Cassia

Cushion solitaire engagement ring with twisted 3/4 eternity flat band set in platinum

from US$1,680

Affinity

Cushion diamond centre and pear side diamonds engagement ring set in platinum

from US$1,960

Elysium

Cushion diamond solitaire engagement ring set in platinum

from US$1,120

Thyme

Cushion solitaire engagement ring with hidden diamond halo and pavé band

from US$1,925

Tamora

Cushion centre engagement ring with marquise diamond petals on a knife edge band

from US$1,715

Faith

Trilogy engagement ring with cushion centre diamond and pear diamond sides

from US$1,470

Faith

Trilogy engagement ring with cushion centre diamond and blue sapphire sides

from US$1,470

Dawn

Cushion diamond centre and fishtail pavé diamond halo engagement ring set in platinum

from US$1,960

Destiny

Cushion centre and side diamond trilogy engagement ring set in platinum

from US$2,275

Lissome

Cushion diamond centre and pavé diamond band engagement ring set in platinum

from US$1,225

Sirius

Cushion diamond solitaire with engagement ring set in platinum

from US$1,680

Hope

Cushion diamond four-claw solitaire engagement ring set in platinum

from US$1,015

Harmony

Cushion centre and side diamond trilogy engagement ring set in platinum

from US$2,940

Damson

Cushion solitaire engagement ring with blue sapphire and diamond ombré pavé

from US$1,365

Serendipity

Cushion centre and pavé band engagement ring set in platinum

from US$1,645

Grace

Cushion diamond solitaire engagement ring set in platinum

from US$1,120

Talisman

Cushion centre and bead-set diamond halo engagement ring with hand-applied milgrain details

from US$2,310

Thimble

Cushion diamond trilogy with filigree basket engagement ring set in platinum

from US$1,470

Celestial

Cushion centre and pavé diamond double halo engagement ring set in platinum

from US$2,765

Divinity

Cushion diamond centre and claw-set diamonds engagement ring set in platinum

from US$1,260

Purity

Cushion diamond solitaire bezel engagement ring set in platinum

from US$1,260

Elixir

Cushion diamond centre and pavé diamond halo engagement ring set in platinum

from US$2,380

Aflutter

Cushion diamond centre and pavé diamond double halo engagement ring set in platinum

from US$2,240

Luna

Cushion diamond centre and half-moon side diamonds engagement ring set in platinum

from US$2,310

Aurora

Cushion centre and fishtail diamond pavé band engagement ring

from US$2,065

Eden

Cushion diamond four-claw solitaire engagement ring set in platinum

from US$1,155

Affinity

Cushion diamond centre and pear side blue sapphires engagement ring set in platinum

from US$1,960

Entwine

Cushion diamond centre and twisted pavé diamond halo engagement ring set in platinum

from US$2,170

Dove

Cushion solitaire with pavé diamond halo engagement ring set in platinum

from US$1,540

Aria

Cushion diamond centre and bead-set diamond band engagement ring set in platinum

from US$1,785

Constellation

Cushion diamond centre and pavé diamonds engagement ring set in platinum

from US$1,785

Selene

Cushion engagement ring with vintage-inspired bezel set diamonds along the band

from US$1,820

Halcyon

Cushion diamond centre and bead set diamonds engagement ring set in platinum

from US$2,205

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Platinum Cushion Diamond Engagement Rings

We want the process of finding a ring to be a creative act, one that gets to the heart of what makes your love unique. Our collection of engagement rings features a diverse range of styles, metals, and ring shapes, making it easy for you to feel confident that you’ve found ‘the one’.

When it comes to engagement rings, platinum has always been the most popular choice—accounting for over 60% of the rings we make today. Durable, naturally bright, and low maintenance, this precious metal makes platinum engagement rings last a lifetime. A platinum band with a unique ring is a match made in heaven, sure to make any centre diamond look its best for years to come.

When it comes to choosing a centre gemstone for your engagement ring, we recommend a cushion diamond for its unique shape and scintillation. Combining the sparkle of round diamonds with a unique shape and softened corners, platinum cushion diamond engagement rings offer a brilliant yet dynamic appearance. If you’re looking for a ring that shines, cushion cut diamonds have the added advantage of having the most light dispersion and fire of all the fancy diamond cuts.

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Platinum Cushion Diamond Engagement Rings

Allure

Dulcet

Demure

Cassia

Affinity

Elysium

Thyme

Tamora

Faith

Faith

Dawn

Destiny

Lissome

Sirius

Hope

Harmony

Damson

Serendipity

Grace

Talisman

Thimble

Celestial

Divinity

Purity

Elixir

Aflutter

Luna

Aurora

Eden

Affinity

Entwine

Dove

Aria

Constellation

Selene

Halcyon

Platinum Cushion Diamond Engagement Rings

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