Compare cushion vs radiant cut diamonds in this expert guide from Diamondrensu. Learn sparkle, style, value and which shape suits you. Shop lab-grown diamonds Australia.
Choosing the perfect diamond shape is one of the biggest decisions you’ll make when buying a ring — whether it’s for an engagement, anniversary, or a meaningful gift. Two of the most loved shapes in Australia right now are cushion cut and radiant cut diamonds. Both offer stunning sparkle, timeless appeal, and incredible value when created as lab-grown diamonds.
At Diamondrensu, we specialise in premium lab-grown diamonds and moissanite, custom-made pieces, and price-conscious luxury for Aussie customers. If you’re comparing cushion vs radiant cuts, this guide will help you decide which shape suits your personal style, budget, and everyday lifestyle.
And remember — every design can be fully customised to your needs.
What Is a Cushion Cut Diamond?
The cushion cut is known for its soft, romantic look. It combines a square or slightly rectangular outline with rounded corners, creating a “pillow-like” shape — hence the name cushion.
Cushion cut diagram (Left: top view, Right: bottom view)
Key Features of Cushion Cut Diamonds
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Rounded corners and curved edges
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Available in square or elongated proportions
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Characterised by a warm, classic, vintage-inspired look
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Often shows a deep, glowy sparkle
Cushion cuts appeal to those who love a feminine, timeless aesthetic. They pair beautifully with almost any setting, from solitaires to halos and micro-Pavé bands.
What Is a Radiant Cut Diamond?
The radiant cut is a modern, angular design created for maximum brilliance. It combines the lines of an emerald cut with the faceting style of a round brilliant cut.
Radiant cut diagram (Left: top view, Right: bottom view)
Key Features of Radiant Cut Diamonds
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Rectangular or square outline
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Straight edges with trimmed corners
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Very bright, high-energy sparkle
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Contemporary, bold presence on the hand
Radiant cuts are a favourite for those who love crisp lines and modern design while still wanting exceptional sparkle.
Cushion vs Radiant Cut: Side-by-Side Comparison
1. Sparkle & Brilliance
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Cushion Cut: Soft, romantic sparkle with a “glow from within.”
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Radiant Cut: Intense, bright brilliance — one of the sparkliest fancy shapes.
If you want the most eye-catching sparkle, many choose the radiant cut.
2. Shape & Style Personality
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Cushion Cut: Rounded edges give it a vintage, delicate feel.
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Radiant Cut: Angular, modern, and bold — perfect for contemporary designs.
Your choice often comes down to whether you prefer soft curves or clean lines.
3. Finger Coverage
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Radiant Cut: Offers excellent spread and can appear larger than its carat weight.
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Cushion Cut: Can appear slightly smaller due to deeper proportions.
If you want a shape that looks bigger on the hand at the same carat size, the radiant cut may win.
4. Versatility for Settings
Both shapes work beautifully in:
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Solitaires
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Halos
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Pavé bands
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Three-stone rings
However:
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Cushions suit vintage-inspired and soft, romantic styles.
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Radiants shine in sleek, modern, and bold designs.
Cushion or Radiant: Which One Should You Choose?
Choose a cushion cut if you love:
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Soft, rounded edges
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Vintage charm
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A romantic, glowing sparkle
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A timeless design aesthetic
Choose a radiant cut if you love:
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Angular, modern lines
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Bright, bold brilliance
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A shape that looks large on the finger
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A clean, contemporary feel
Not sure? We can create side-by-side comparisons, 3D renders, or gemstone videos to help you visualise each cut.
Shop Cushion and Radiant Lab-Grown Diamonds in Australia
As of September 2025, you’ll also be able to visit us in person at our new Diamondrensu store in Kirrawee, Sydney, where our team will guide you through diamond shapes, settings, budgets, and personalised designs.
Browse online or enquire about custom work anytime at:
Every ring can be customised to your style, budget, and diamond preferences.
