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Free shipping worldwide Complimentary exchange & returns

Zoom Cushion Solitaire engagement ring, made of 1 carat lab-grown diamond and 18k yellow gold.
Zoom The Cushion Solitaire
Zoom The Cushion Solitaire
Zoom Cushion Solitaire engagement ring in the yellow gold 4-prong setting.
Zoom Elegant Cushion Solitaire engagement ring, made of ethical 1 carat lab-grown diamond and 18k solid white gold.
Zoom The Cushion Solitaire
Zoom The Cushion Solitaire
Zoom Cushion Solitaire lab-grown diamond ring in the white gold 4-prong setting.
Zoom Lab-grown diamond engagement ring with a 1 carat cushion cut diamond in the rose gold band.
Zoom The Cushion Solitaire
Zoom The Cushion Solitaire
Zoom The Cushion Solitaire

The Cushion Solitaire


Fits perfectly with


With a plush square shape with soft rounded corners, The Cushion Solitaire diamond ring is the romantic’s choice. With most fire of all diamond shapes, the cushion cut emits colorful flashes under the light, and its soft shape give it a vintage feel making it a timeless wedding and engagement ring. The sustainably created center stone is set high to draw in light and shine bright in its setting. Our Solitaire rings fit a ring of equal thickness - such as our Pavé Diamond Ring - next to them.

All engagement rings with a 0.5ct center stone or bigger come with an official diamond certificate from HRD Antwerp.

• 18K solid gold
• A classic 4-prong setting
• Ring width 1.7mm and thickness 1.6mm

All our engagement rings are made-to-order with a 2-4 week delivery. For more ring sizes, please send your request to


Ring Sizer


Shown with a 1-carat center stone.


Sustainably created diamonds

Our labgrown diamonds are ethically sourced from suppliers who follow conflict-free and socially responsible practices.

18K recycled solid gold

All our jewelry is made of 18-karat recycled and solid gold, made to last forever. Since gold is one of the least reactive metals, it scratches less and doesn't wear out as easily. 18k gold will not oxidize or discolor, so you can wear your jewelry every day, everywhere.

Contact us

Would you like to know more about a particular piece of jewelry? Contact us at or DM us at Instagram @karaatjewelry and our team will respond within 24 hours.

The Cushion Solitaire



Are your rings certified?

All wedding and engagement rings with a 0.5ct center stone or larger will be delivered with a third-party certificate which displays details of your ring and center stone. For center stones smaller than 0.5ct, you will receive a KARAAT certificate with details of your ring. If you'd like to get an official certificate for a smaller diamond, please contact us at

Where are the engagement rings made?

Our wedding and engagement rings are hand-made by talented goldsmiths in Antwerp, Belgium.

Can your rings be customized?

Our wedding and engagement rings can be altered to some extent. Would you like a slightly lower center stone setting, or your wedding or engagement date engraved? Send your questions and requests to - we often make small alterations free of charge.

Can I see your rings in real life?

For trying out our rings and figuring out which look suits you the best, you can order our Home Try-On kit. The kit is perfect for trying on different designs and center stone sizes as well as finding out your ring size. Read more here.

Shipping & returns

Fast shipping

Our wedding and engagement rings are made-to-order with a standard 4-week delivery. You can opt for a 2-week express delivery option at checkout for an extra fee. Once ready, your order is shipped with a 1-2 day delivery by trusted delivery providers straight to your provided address.

Free 30-day returns

You can exchange and return any orders within 30 days from delivery date. Just get in touch with us at or read more about our return and exchange policy here.

Get in touch

Have a question? Don't hesitate to reach out to us at You can also DM us on Instagram Our team will respond to you within 24 hours.

18-karat solid gold

All our jewelry is made from solid 18K gold, the highest gold rate that can be used in jewelry. With solid gold, you won't have to worry about the color of your jewelry changing over time or rubbing off. 18-karat gold is durable and last for a lifetime.

Sustainably created diamonds

Modern luxury should be built with modern materials that are all ethical, of high quality and made with no exceptions. The diamonds used in our jewelry are created in laboratories by environmental and ethical principles so you can wear luxury with a clean conscience. All diamonds have a D-F/VVS-VS grading for the brightest possible shine and sparkle.

Thoughtfully crafted

Designed in Finland and hand-made in Italy by talented goldsmiths, we have put great effort into creating a perfect combination of modern and minimalist and timeless design with the best execution.

Learn more

Use coupon code HELLO10 for 10% off your first order on everyday jewelry.


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