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Gold solitaire ring with a round diamond on a light surface with flowers in the background

Gold ring with a diamond on a person's finger against a neutral background

Aval Solitaire Ring

£1,230.00

Gold diamond engagement ring with a diamond on a white stone with blurred natural background

Gold ring with a large diamond on a person's finger

Awen Round Brilliant Cut Ring

£1,830.00

Platinum ring with a round brilliant cut diamond on a light background

Round cut platinum engagement ring worn on the hand with a classic wedding band

Estrenn Solitaire Ring

£1,350.00

Gold three stone ring with round brilliant cut diamonds on a marble surface with blurred flowers in the background

Gold trilogy ring with round brilliant cut diamonds, stacked with a chevron wedding band on a person's finger against a neutral background

Dira Trilogy Ring

£1,850.00

Platinum shoulder set ring with a large round cut diamond on a light background

Round brilliant cut engagement ring on the hand

Loer Round Brilliant Cut Ring

£1,190.00

Platinum nature inspired ring with round cut diamond on a marble surface

Nature inspired platinum engagement ring worn on the hand set with diamonds

Tegen Round Brilliant Cut Ring

£1,740.00

Gold ring with a diamond on a light background

Close-up of a hand wearing a gold ring with a diamond on a brown background

Tevy Round Brilliant Cut Ring

£1,450.00

Gold nature inspired ring with a diamond on a marble surface with white flowers in the background

Bleujy Round Brilliant Cut Ring

£1,710.00

Platinum ring set with a cluster of diamonds on a light background

Platinum ring with a cluster of round diamonds on a hand against a pink fabric background

Sterenn Round Brilliant Cut Ring

£1,610.00

Round Cut Collection: The Iconic Choice

The round brilliant cut engagement ring is a true classic for a reason. With its perfect symmetry and 58 meticulously cut facets, it delivers an unparalleled fire and sparkle that has made it the quintessential symbol of everlasting love. This shape is a timeless choice, brilliant and enduring—just like your own love story. At The Cornish Diamond Co., our round brilliant diamond rings are more than just beautiful. Each features a stunning lab grown diamond, grown with integrity and care to be a responsible and ethical choice. We set these exceptional ethical diamonds in your choice of sustainable recycled gold and platinum, creating a piece of fine jewellery that you can wear with pride for a lifetime and beyond. Browse our curated collection of round brilliant engagement rings and find the perfect symbol for your unique journey.

FAQs

A round cut engagement ring features the most popular and classic diamond shape. The round brilliant cut, as it is officially known, is meticulously engineered with 58 facets to maximise light reflection and create incredible brilliance and fire. It's a timeless choice that has been the gold standard for diamond engagement rings for over a century.

The enduring popularity of the round brilliant diamond is a testament to its unmatched sparkle. No other diamond shape reflects light in the same way, and its symmetrical design makes it incredibly versatile. It looks stunning in a simple solitaire, a vintage-inspired halo, or any other setting you can imagine. Its classic beauty ensures it will never go out of style.

Yes, the quality of a round diamond's cut is paramount. A well-cut diamond will have perfect proportions and symmetry, which is what creates its exceptional sparkle. This is why we focus on selecting only the most beautifully cut lab-grown diamonds for our rings, ensuring they deliver maximum brilliance and fire.

A round cut diamond is highly versatile and works with almost any setting. A classic six-prong solitaire setting is a traditional choice that enhances the diamond's beauty. For a more modern look, a bezel setting offers a sleek, secure design. You might also consider a hidden halo or side stones to add extra sparkle and personality to your ring.