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Round vs Asscher Cut Lab-Grown Diamonds
The clearest difference is light behaviour. The round brilliant is engineered for maximum brilliance and fire, while the Asscher is a step cut prized for calm, concentric depth. Choose round for the timeless option with the most sparkle; choose Asscher for Art Deco geometry and a quieter, mirror-like look. From $990 and $1090 respectively (1ct VS1).
Round vs Asscher at a glance
| Round | Asscher | |
|---|---|---|
| Faceting | brilliant cut | step cut |
| Character | maximum brilliance and fire | deep, concentric step-cut depth |
| Length-to-width | 1.00 (round) | 1.00 to 1.05 |
| Face-up size | compact, true to carat | compact, true to carat |
| Durability | no points, very setting-friendly | cropped corners, shows inclusions |
| What to screen for | cut grade above all | eye-clean clarity and symmetry |
| Starting price (1ct VS1) | $990 AUD | $1090 AUD |
| Best for | the buyer who wants the most light return and a timeless choice | Art Deco geometry and step-cut depth |
The key difference
The Asscher's open step-cut facets act like windows rather than the round's mosaic of light-scattering facets, so inclusions read far more clearly face-up. Eye-clean clarity and crisp symmetry therefore matter more on an Asscher than on a round, where a strong cut grade conceals minor flaws. The round also returns more light through its crown, so at equal carat weight it tends to look brighter, while the Asscher's cropped corners make it durable and quietly setting-friendly.
Which should you choose?
Choose the round cut for the buyer who wants the most light return and a timeless choice. Choose the asscher cut for Art Deco geometry and step-cut depth. Both are sourced to your brief, certified by IGI or GIA, and priced AU-inclusive.
Common questions
Is a round or Asscher lab-grown diamond better value at one carat?
A 1ct VS1 round starts from $990 and a 1ct VS1 Asscher from $1090, so the round is the slightly more accessible entry point. The round's brilliant faceting also masks minor inclusions, which can let a lower clarity grade work well, whereas an Asscher rewards spending on eye-clean clarity to look its best.
Which cut hides inclusions better, round or Asscher?
The round brilliant hides inclusions far better. Its many facets scatter light and break up the view, so the priority becomes cut grade. The Asscher is a step cut with open, mirror-like facets that act as windows, making inclusions and any symmetry issues more visible, so screen carefully for eye-clean clarity and crisp symmetry.
Do round and Asscher diamonds look the same size face-up?
Both have a length-to-width ratio near 1.00, so each reads as a square or round outline rather than elongated; an Asscher may run to about 1.05. The round's intense brilliance can make it appear livelier, while the Asscher's concentric step-cut depth gives a calmer, more architectural presence at the same carat weight.