The Asscher cut is the most architectural diamond shape ever created.
Developed in 1902 by Joseph Asscher of the Royal Asscher Diamond Company in Amsterdam, it was designed to be a square step-cut stone with perfect geometric proportions. The result was a diamond that, when viewed face-on, shows a series of concentric squares receding to the centre in an X-pattern, creating a kaleidoscopic depth that no other diamond shape replicates.
The Asscher was the defining diamond of the Art Deco period. It fell from mainstream fashion after the mid-20th century but has returned strongly in the last decade. In India in 2026, the Asscher is the most distinctive choice available in the step-cut family.
The History Behind the Shape
The Asscher cut was patented by Royal Asscher Diamond Company in 1902 and became the signature diamond of the Art Deco movement of the 1920s and 1930s. Art Deco design, with its celebration of geometry, precision, and modernist clean lines, found its perfect jewellery expression in the Asscher.
The original Asscher had 58 facets. The Royal Asscher Diamond Company introduced the modified Royal Asscher in 2001, with 74 facets, which produces significantly more brilliance than the original while retaining the distinctive square step-cut silhouette and X-pattern.
In India, the Asscher has become associated with a very specific buyer: someone who has studied their diamond shapes carefully, rejected the mainstream options as too conventional, and arrived at the Asscher as the most satisfying expression of their individual aesthetic.
The X-Pattern: What Makes the Asscher Visually Unique
When you look directly into an Asscher cut diamond face-on, you see a pattern of concentric squares that appear to recede toward the centre of the stone. The four step-cut rows on each side reflect each other at the corners, creating an X or windmill pattern at the heart of the stone.
This X-pattern is the definitive visual identifier of the Asscher cut. No other diamond shape produces it. In direct overhead lighting, the pattern is most pronounced. In diffuse or ambient lighting, the stone produces the same long, sweeping flashes of the emerald cut but concentrated in a tighter square form.
Looking into a well-cut Asscher feels like looking into a geometric kaleidoscope.
Asscher vs Emerald: The Step-Cut Siblings
The Asscher and the emerald cut are both step-cut diamonds that share the same faceting philosophy. The single defining difference is proportions.
Emerald cut: rectangular, length-to-width ratio typically between 1.30 and 1.65. Creates an elongated, horizontal stone that flatters the finger with a lengthening effect.
Asscher cut: square, length-to-width ratio between 1.00 and 1.05. Creates a compact, octagonal stone that sits symmetrically on the finger without directional elongation.
For buyers choosing between them: if elongation and horizontal emphasis are desired, emerald. If square symmetry and the distinctive X-pattern depth are the appeal, Asscher.
Quality Grades for Asscher Cut Diamonds
Clarity: VS1 or Better
The Asscher cut has the same open-facet clarity visibility as the emerald cut. For Asscher cuts, VS1 clarity is the recommended minimum. VS2 can work if the specific inclusion is positioned at the edge of the stone rather than centrally visible through the large table.
Colour: F to G
Target F to G colour for the most colourless appearance in white gold settings. H colour is the practical limit for Asscher cuts in white gold before the colour warmth becomes perceptible in the broad table.
Length-to-Width Ratio
A true Asscher cut should have a length-to-width ratio of 1.00 to 1.05. Anything above 1.05 starts reading more as a short rectangular emerald cut than as a square Asscher.
Best Settings for Asscher Cut Diamonds
Four-Prong Solitaire at the Cut Corners
The four prongs placed at the four cut corners of the Asscher create a clean view of all eight faces of the octagonal outline. In white gold, a four-prong Asscher solitaire is one of the most striking Art Deco-inspired rings available.
Art Deco Inspired Settings
Filigree metalwork, milgrain edges, and pavé-set side stones in geometric Art Deco patterns complement the Asscher cut's historical character. Made-to-order Art Deco inspired Asscher settings are available at Goenka Jewellers.
Bezel Setting
A full bezel encircling the octagonal Asscher in a matching octagonal metal rim is a contemporary take on the shape. The bezel echoes the eight-sided outline of the stone.
Asscher Cut Price Guide India 2026
0.50 carat Asscher, F-G colour, VS1 clarity, 14K white gold four-prong: Rs 22,000 to Rs 38,000
0.75 carat Asscher, F-G colour, VS1 clarity, 18K white gold: Rs 35,000 to Rs 58,000
1.00 carat Asscher, F-G colour, VS1 clarity, 18K white gold solitaire: Rs 58,000 to Rs 95,000
Frequently Asked Questions
Why is the Asscher cut octagonal if it is described as square?
The Asscher cut is square in proportion but octagonal in outline because its four corners are cut off at 45-degree angles, creating an eight-sided shape. The octagonal outline is part of what makes the Asscher distinctive when viewed from above.
Is an Asscher cut the same as a square emerald cut?
Not exactly. While both are square-proportioned step cuts, the Asscher has a higher crown and smaller table than a square emerald cut. These proportional differences create the specific X-pattern or windmill effect of the Asscher that a square emerald cut does not produce to the same degree.
Does the Asscher cut look vintage or modern?
Both, depending on the setting and metal. In a yellow gold Art Deco setting with milgrain or filigree metalwork, the Asscher reads as decidedly vintage. In a clean white gold four-prong or bezel setting, the same stone reads as modern and architectural.
Is the Asscher cut appropriate for an engagement ring in India?
Yes, completely. It is not the mainstream choice, which for many buyers is precisely the appeal.
The Bottom Line
The Asscher cut is the most historically significant, most geometrically precise, and most architecturally distinctive diamond shape available in 2026. Square, deep, kaleidoscopic, and unmistakable.
For the complete diamond shape comparison, read our Ultimate Lab-Grown Diamond Cuts and Shapes Guide India 2026. For emerald cut comparison, read our Emerald Cut Lab-Grown Diamonds India 2026. Then explore Goenka Jewellers certified lab-grown diamond rings for Asscher cut options.