A radiant cut diamond ring offers something rare: the brilliance of a round diamond with the elegant, elongated lines of a step cut. If you’re drawn to diamonds that sparkle intensely but want a shape that feels modern and sophisticated, radiant cut is worth your full attention.

What Is a Radiant Cut Diamond?

The radiant cut was developed in the 1970s by master cutter Henry Grossbard. It combines 70 facets — the same facet structure that makes round brilliants so fiery — with a rectangular or square outline. The result is a diamond that catches light from every angle and never looks dark or dull in the corners.

Unlike emerald cuts (which have long, mirror-like facets that show clarity clearly), radiant cuts hide minor inclusions well. This means you can often go one clarity grade lower and still get an eye-clean stone — which lets you put more of your budget toward carat weight or colour.

Radiant Cut vs. Other Shapes

Shape	Brilliance	Length-to-Width	Best For
Radiant Cut	Very High	1.00–1.35	Sparkle + modern look
Emerald Cut	Medium (hall of mirrors)	1.30–1.50	Elegant, art deco look
Cushion Cut	High	1.00–1.10	Soft, vintage feel
Princess Cut	High	1.00–1.05	Sharp, contemporary

The radiant cut sits at the intersection of round-brilliant sparkle and fancy-shape sophistication. It suits people who want maximum fire without committing to a traditional round.

Choosing the Right Radiant Cut: The 4 Cs

Cut Quality

GIA does not grade radiant cuts with the same “Excellent/Very Good” scale used for rounds. Instead, look at the depth percentage (58–66% is ideal) and table percentage (58–68%). A well-cut radiant will show even light distribution across the entire stone — no dark bowtie effect like some cushion or oval cuts.

Colour

Radiant cuts retain colour more than round brilliants. For a white gold or platinum setting, aim for G–H colour. In a yellow gold setting, I–J colour is perfectly acceptable — the warm metal tone complements the slight warmth in the diamond and saves you significant cost.

Clarity

Because of the intense faceting, radiant cuts mask inclusions beautifully. VS2 or even SI1 is often eye-clean. Have your jeweller check the specific stone — but don’t automatically reach for VS1 or higher unless the certificate shows an inclusion in a visible position.

Carat Weight

Radiant cuts look larger face-up than their carat weight suggests, especially rectangular ratios (1.20–1.35). A 1.20ct radiant with a 1.25 length-to-width ratio can look as large as a 1.50ct round. This makes radiant cut excellent value for buyers focused on visual size.

Radiant Cut Engagement Ring Settings

The trimmed corners of a radiant cut (unlike princess cuts, which have sharp points) make it versatile for almost any setting style:

• Solitaire: A four-prong or bezel solitaire lets the diamond speak for itself. Clean, timeless, always appropriate.
• Halo: A micro-pavé halo around the radiant cut adds significant face-up size and extra sparkle. Very popular with 1–1.5ct centre stones.
• Three-stone: Pair with two tapered baguettes or two smaller radiant cuts on the sides for an art-deco look that honours the shape’s geometry.
• East-West setting: Mounting the radiant horizontally (long axis across the finger) has become a contemporary trend. Works particularly well with elongated 1.30+ ratio stones.

Popular Radiant Cut Ring Styles at Ariel Jewellery

We design and hand-craft radiant cut engagement rings in our studio in Sydney. Every ring is made to order — you choose the centre stone, the metal, and every detail of the setting. Below are some of our radiant cut pieces available now:

How Much Does a Radiant Cut Diamond Ring Cost?

Radiant cuts are typically 10–20% less expensive than comparable round brilliant diamonds. For context:

• 0.75ct radiant, G/VS2: approximately $2,500–$3,500 for the stone alone
• 1.00ct radiant, G/VS2: approximately $4,000–$6,000 for the stone alone
• 1.50ct radiant, G/SI1: approximately $7,000–$10,000 for the stone alone

Setting costs vary depending on complexity — a simple white gold solitaire starts around $800, while a full pavé halo in platinum may be $2,500+. We work with your budget to find the right combination.

Book a Consultation

Not sure which radiant cut is right for you? We review diamonds personally before recommending them — we won’t suggest a stone we wouldn’t be proud to set. Call us or send a message to start the conversation. There’s no pressure and no obligation.

We’ve been working with diamonds for two generations. When you’re ready to design your ring, we’re here.