Engagement Rings
Round Diamond engagement rings.
The round brilliant diamond is the most popular diamond shape in the world, accounting for approximately 75% of all diamonds sold. With 58 precisely angled facets engineered for maximum brilliance and fire, a round diamond engagement ring delivers unmatched sparkle from every angle. Its timeless silhouette is versatile enough to suit every setting style — from classic solitaires to intricate halo and pavé designs. Whether you visit our Melbourne showroom or explore our GIA and IGI certified collection online, you will find the perfect round diamond engagement ring to mark your forever moment.
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Buying Guide
Everything you need to know about round diamond engagement rings.
The round brilliant cut was perfected over centuries and remains the benchmark against which all other diamond shapes are measured. Its symmetrical form maximises the return of light, producing the dazzling brilliance and rainbow fire that diamonds are famous for. Understanding cut quality is paramount when choosing a round diamond — an Excellent or Ideal cut grade ensures the stone performs at its very best. Our GIA and IGI certified round diamonds are hand-selected for superior light performance, so you can shop with complete confidence.
Read the full guide →Why is the round brilliant the most popular diamond shape?
The round brilliant cut has been mathematically optimised for maximum light return, giving it unrivalled sparkle compared to any other shape. Its timeless, symmetrical silhouette complements every ring setting and suits all hand shapes, which is why it has remained the number-one choice for engagement rings for over a century.
What are the ideal cut proportions for a round diamond?
For maximum brilliance, look for a table percentage between 54% and 57%, a depth percentage between 61% and 62.5%, and a crown angle of around 34.5 degrees. GIA Excellent and IGI Ideal cut grades already meet these benchmarks, making them a reliable shortcut when shopping for the best-performing round diamonds.
How does a round diamond's brilliance compare to other shapes?
The round brilliant cut returns more light to the eye than any other diamond shape, thanks to its 58 precisely calculated facets. While fancy shapes like ovals and cushions can be exceptionally beautiful, they do not match the optical efficiency of a well-cut round. This superior light performance is the primary reason round diamonds command a premium in the market.
What are the best ring settings for a round diamond?
Round diamonds are incredibly versatile and look stunning in virtually every setting style. Classic solitaires and six-prong Tiffany-style settings showcase the stone's brilliance, while halo and pavé designs add extra sparkle. Visit our Melbourne showroom to try different settings on your hand and discover which style speaks to you.
How should I prioritise the 4Cs when buying a round diamond?
For round brilliants, cut quality should always be your top priority — it has the greatest impact on sparkle and overall beauty. After cut, we recommend balancing carat weight with colour (G–H offers excellent value) and clarity (VS2 or SI1 is typically eye-clean). Book a free consultation with our diamond specialists to find the perfect combination for your budget.
