Round Cut Diamonds

The round brilliant cut diamond features 58 precisely angled facets, more than any other loose diamond shape. This unique facet arrangement maximises light performance, reflecting up to 98% of incoming light and producing unmatched brilliance, fire and scintillation. No other diamond shape delivers this level of optical perfection. An Excellent cut round brilliant diamond achieves the ideal depth percentage (59-62.5%) and table percentage (54-57%) — ensuring every ray of light is returned directly to the eye. Combined with Excellent polish and symmetry, this creates the signature sparkle that round cut diamonds are world-famous for.

Every round cut diamond in our collection is certified by GIA, IGI or HRD, the world’s most trusted diamond grading laboratories. Each certificate precisely documents the diamond’s 4Cs — cut, colour, clarity and carat weight, so you shop with complete confidence. Round brilliant cut diamond also carry the strongest resale value of any diamond shape, driven by consistent global demand and their natural rarity as earth-mined stones.

Choosing a loose diamond can feel overwhelming — but it doesn’t have to be. Here’s exactly what to look for:

Cut — Always Prioritise This First
Cut is the single most important factor in a round cut diamond. An Excellent cut maximises light return and gives you that signature sparkle. Never go below Very Good cut — even a high clarity diamond will look dull with a poor cut.

Colour — G is Your Sweet Spot
For round cut diamonds, G colour is our most popular choice — and for good reason. It appears perfectly white to the naked eye, yet is priced more sensibly than D-F colourless grades. Smart buyers know G is where value meets beauty.

Clarity — VS2 is the Wise Choice
VS2 clarity diamonds are completely eye-clean and beautiful. Unless you’re purchasing above 3ct, you won’t need VVS or Flawless clarity — save that budget for a larger carat or better cut instead.

Carat — Find Your Perfect Size
Not sure which carat is right for you? Browse our full range of earth-mined round cut diamonds by carat size:

1ct Round Cut Diamonds | 2ct Round Cut Diamonds | 3ct Round Cut Diamonds | 4ct Round Cut Diamonds | 5ct Round Cut Diamonds | 6ct Round Cut Diamonds | 7ct Round Cut Diamonds | 8ct Round Cut Diamonds | 9ct Round Cut Diamonds | 10ct Round Cut Diamonds 

Our Best Recommendation:
For the perfect balance of size, brilliance and value — we recommend a 1ct, Excellent Cut, G Colour, VS2 Clarity earth-mined round cut diamond. It’s our best seller for a reason.