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Lab-Grown Cushion

Every lab-grown ring shows today’s five diamonds that meet Simon’s standard, most in 360°. You choose your exact stone before you buy. See today’s 1 carat and 2 carat prices.

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13 products

Katie Cushion Cut Lab Grown Engagement Ring
'Katie' Cushion Cut Lab Grown Engagement Ring PriceFrom $1,900

in 9ct gold · 1.00ct

Grace Cushion Cut Lab Grown Engagement Ring
'Grace' Cushion Cut Lab Grown Engagement Ring PriceFrom $1,900

in 9ct gold · 1.00ct

Fiona Cushion Cut Lab Grown Engagement Ring
'Fiona' Cushion Cut Lab Grown Engagement Ring PriceFrom $1,900

in 9ct gold · 1.00ct

Abbie Cushion Cut Lab Grown Engagement Ring
'Abbie' Cushion Cut Lab Grown Engagement Ring PriceFrom $1,900

in 9ct gold · 1.00ct

Nothing quite right?

Every design here can be changed for you.

Stone, metal, band, setting — designed with you in our King William Street boutique and made to order in four to six weeks.

Book a private viewing
Delta Cushion Cut Lab Grown Engagement Ring
'Delta' Cushion Cut Lab Grown Engagement Ring PriceFrom $1,900

in 9ct gold · 1.00ct

Casey Cushion Cut Lab Grown Engagement Ring
'Casey' Cushion Cut Lab Grown Engagement Ring PriceFrom $1,900

in 9ct gold · 1.00ct

Hope Cushion Cut Lab Grown Engagement Ring
'Hope' Cushion Cut Lab Grown Engagement Ring PriceFrom $2,400

in 9ct gold · 1.00ct

Julia Cushion Cut Lab Grown Engagement Ring
'Julia' Cushion Cut Lab Grown Engagement Ring PriceFrom $2,400

in 9ct gold · 1.00ct

Kylie Cushion Cut Lab Grown Engagement Ring
'Kylie' Cushion Cut Lab Grown Engagement Ring PriceFrom $2,400

in 9ct gold · 1.00ct

Chloe Cushion Cut Lab Grown Engagement Ring
'Chloe' Cushion Cut Lab Grown Engagement Ring PriceFrom $2,400

in 9ct gold · 1.00ct

Emily Cushion Cut Lab Grown Engagement Ring
'Emily' Cushion Cut Lab Grown Engagement Ring PriceFrom $2,400

in 9ct gold · 1.00ct

Flora Cushion Cut Lab Grown Engagement Ring
'Flora' Cushion Cut Lab Grown Engagement Ring PriceFrom $2,750

in 9ct gold · 1.00ct

Jenna Cushion Cut Lab Grown Engagement Ring
'Jenna' Cushion Cut Lab Grown Engagement Ring PriceFrom $2,750

in 9ct gold · 1.00ct

Made to order

Yours doesn’t have to be on this page.

Stone, metal, band, setting — designed with you in our King William Street boutique and made to order in four to six weeks.

Book a private viewing

Cushion lab-grown engagement rings in Adelaide

A cushion is a square or slightly rectangular stone with softened corners and a pillow-like face. It has a softer, more romantic character than a princess or emerald cut, and a long history in antique rings.

Every cushion ring on this page is a Simon Alexander design, made to order around an IGI-certified lab-grown diamond that you choose. The designs are Katie, Grace, Fiona, Abbie, Delta, Casey, Hope, Julia, Kylie, Chloe, Emily, Flora and Jenna.

The range runs from plain solitaires such as Casey, Abbie, Grace, Katie and Fiona to accent-diamond and halo designs such as Hope, Julia, Kylie, Emily and Chloe. Any design can be adjusted, and if the right ring is not here we will design it with you.

Choosing a cushion diamond

Cushions are cut in different facet styles, some with broad flashes of light and some with a finer, sparkling pattern, so two cushions of the same carat can look quite different. Simon’s five shows you real stones with their full IGI grades, so you can compare them side by side. A 1 carat cushion is roughly 5.5 to 6mm across.

How it wears

The rounded corners make a cushion comfortable to wear and easy to protect in a four-claw setting, and it pairs well with a halo.

What it costs

Every price on this page is the finished ring: setting, metal and the lab-grown diamond. See today’s 1 carat prices and today’s 2 carat prices by shape, or compare lab-grown and natural. Natural cushion diamonds come with a GIA certificate; ask us for a shortlist.

Made to order in Adelaide

Each ring is designed in our King William Street boutique, Australian made, and set and hand-finished by our own jewellers. Most take four to six weeks. Come and see the shapes side by side at Level 1, 14 King William Street.