Geometry & Light Performance
The round brilliant cut is the industry standard for maximum fire and brilliance. Engineered with 57 or 58 facets, its perfectly symmetrical conical shape is mathematically optimized to reflect light, creating exceptional sparkle that has made it the most iconic and sought-after diamond shape globally.
- Facets: 57-58
- Style: Maximum Brilliance
Top View
Side View
About the Round Brilliant Cut
The round brilliant is the most sought-after diamond shape in the wholesale trade, accounting for roughly two-thirds of all diamonds sold worldwide. With 57 to 58 precision-cut facets and an ideal length-to-width ratio of 1.00 to 1.02, it is engineered to return the maximum possible light to the eye. At Anand Exports we cut round brilliants to GIA Triple Excellent standards (Excellent cut, polish, and symmetry) across a full range of colours and clarities, supplying loose parcels to jewellery manufacturers, independent jewellers, and luxury houses across our six export markets.
- Ideal length-to-width ratio: 1.00 – 1.02
- Facet count: 57 – 58
- Most popular carat range (wholesale): 0.30 ct – 3.00 ct
- Recommended cut grade: GIA Triple Excellent
Frequently Asked Questions
What is a round brilliant cut diamond?
A round brilliant is a circular diamond cut with 57 or 58 facets, mathematically optimised to maximise brilliance and fire. It is the most popular and most extensively researched diamond shape in the world.
What is the ideal length-to-width ratio for a round brilliant?
A perfectly round diamond has a length-to-width ratio between 1.00 and 1.02. Ratios within this range appear circular to the naked eye and command the strongest wholesale demand.
Why are round brilliant diamonds more expensive per carat?
Round brilliants lose more rough during cutting than fancy shapes — often over 50% of the original crystal — so more rough is required per polished carat. Combined with the highest market demand, this makes them the premium shape per carat.