Custom Asscher Cut Diamond Rings — Timeless Step-Cut Elegance
The Asscher cut diamond transforms light into concentric corridors of brilliance — the legendary hall-of-mirrors effect born in 1902 Amsterdam. Commission your bespoke Asscher engagement ring with Riolls master goldsmiths.
What Is an Asscher Cut Diamond?
The Asscher cut is a square step-cut diamond distinguished by its deeply cropped corners, high crown, small table, and broad, layered facets. Invented in 1902 by master diamond cutter Joseph Asscher of the Royal Asscher Diamond Company in Amsterdam, it was the first patented diamond cut in history.
The original Asscher features 58 facets arranged in concentric rectangular layers that descend from the table to the culet, creating the mesmerising “hall of mirrors” optical effect — concentric squares of light and shadow visible when viewed from above. The modern Royal Asscher cut, introduced in 2001, features 74 facets for enhanced light performance while preserving the iconic step-cut silhouette.
Unlike brilliant-cut diamonds that shatter light into thousands of tiny sparkles, the Asscher produces long, elegant flashes of white light (known as “fire corridors”) that sweep across the stone as it moves. This gives the Asscher a calm, sophisticated luminosity — dramatic but never chaotic.
How the Asscher Cut Works
The Asscher cut belongs to the step-cut family, alongside the emerald cut. Its facets are arranged in parallel layers (like steps on a staircase) rather than in the triangular and kite-shaped pattern of brilliant cuts. This fundamental difference produces a completely different interaction with light.
When light enters the Asscher through its relatively small table (typically 60–65% of the stone's width), it bounces between the broad, flat step facets, creating long, clean flashes of brilliance rather than the rapid-fire sparkle of a round brilliant. The deeply cropped corners allow additional light entry from the sides, enhancing the hall-of-mirrors illusion.
The higher crown height (compared to modern emerald cuts) increases the Asscher's dispersion — the splitting of white light into spectral colours. This means that while the Asscher may not sparkle as frequently as a round, its flashes of fire are broader and more dramatic, with visible rainbows that sweep across the stone in natural light.
The Asscher Diamond in Love
“The Asscher is for the person who sees beauty in structure — who finds romance not in chaos, but in order, depth, and transparency.”
The Asscher cut symbolises clarity of intention and depth of commitment. Its transparent, window-like facets suggest honesty and openness — nothing is hidden. The concentric layers draw the eye inward, mirroring the way love deepens over time, layer by layer.
Historically, the Asscher was the diamond of choice during the Art Deco era (1920s–1930s), a period defined by geometric precision, bold creativity, and unapologetic glamour. Choosing an Asscher cut engagement ring today signals an appreciation for heritage, individuality, and a love of distinctive beauty over mass-market trends.
Notable Asscher cut admirers include Elizabeth Taylor, whose 33.19-carat Asscher (the Krupp diamond) became one of the most famous engagement rings in history, and modern figures like Pippa Middleton and Jessica Alba, who chose Asscher-cut engagement rings for their timeless geometric appeal.
The 4Cs for Asscher Cut Diamonds
The Asscher cut is a step cut with 58 facets arranged in concentric square layers. An ideal Asscher has perfectly symmetrical stepped facets that produce the signature "hall of mirrors" optical effect. Look for excellent symmetry and polish grades — these matter even more than in brilliant cuts because step-cut facets reveal asymmetry instantly.
Step-cut diamonds like the Asscher do not mask body colour as effectively as brilliant cuts. The open, mirror-like facets reveal even slight tints. For a white appearance, we recommend H colour or better. If you prefer a warm vintage aesthetic, I–J colour Asschers produce a beautiful antique glow in yellow gold settings.
Asscher cuts are the most clarity-demanding of all diamond shapes. The large, open table and step-cut facets act like windows into the stone — inclusions that would be invisible in a round brilliant are clearly visible in an Asscher. We recommend VS2 or better for eye-clean results. SI1 can work if the inclusion is positioned under a step facet edge.
The Asscher cut carries more weight in its depth (typically 60–68% depth ratio) than face-up. A 1.50-carat Asscher may appear similar in face-up size to a 1.20-carat round. We recommend stepping up approximately 15–20% in carat weight compared to a round if you want equivalent visual presence on the finger.
Why Customize an Asscher Diamond Ring?
The Asscher cut is inherently rare — it accounts for less than 2% of all diamonds sold worldwide. Finding a ready-made Asscher ring in a high-street jeweller that matches your exact vision is nearly impossible. Custom design is the natural path for this shape.
Because the Asscher's step-cut facets demand exceptional clarity and symmetry, selecting the exact right stone — with the ideal table percentage, depth ratio, and step facet alignment — is critical. A bespoke service like Riolls allows you to hand-select your GIA-certified Asscher before any metalwork begins, ensuring the stone and setting are engineered as one cohesive piece.
The Asscher thrives in settings that complement its geometric character: clean bezel frames, Art Deco-inspired milgrain borders, stepped shoulders, and minimalist solitaires. At Riolls, every Asscher ring is designed from scratch — your metal, your proportions, your engraving — and handcrafted by a single master goldsmith in solid gold.
Crafting your custom Asscher diamond ring in 5 steps
Describe your dream Asscher diamond ring — preferred carat, setting style (bezel, solitaire, halo, three-stone), and metal choice.
We source GIA or IGI certified Asscher diamonds matching your exact specifications for cut symmetry, clarity, and budget.
Review photorealistic 3D renders of your Asscher ring design from every angle before metalwork begins.
Your ring is forged by hand by a single artisan in our Surat atelier — unhurried, precise, and made entirely for you.
Arrives at your doorstep in luxury packaging with independent diamond certificates and full transit insurance.
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Everything you need to know about custom Asscher diamond rings
What is an Asscher cut diamond?
The Asscher cut diamond is a square step-cut diamond with deeply cropped corners, creating an almost octagonal shape. It was invented in 1902 by Joseph Asscher of the Royal Asscher Diamond Company in Amsterdam. The original Asscher had 58 facets; the modern "Royal Asscher" features 74 facets for enhanced brilliance. The signature optical effect is a mesmerising "hall of mirrors" — concentric squares of light visible when looking straight down through the table.
What is the difference between an Asscher cut and an emerald cut?
Both are step cuts, but they differ in shape and proportions. The Asscher cut is square (length-to-width ratio of 1.00–1.05) with deeply cropped corners, creating an octagonal outline and a more pronounced "X" pattern of light. The emerald cut is rectangular (ratio 1.30–1.60) with shallower corner crops. The Asscher also tends to have a higher crown and smaller table, enhancing its depth and hall-of-mirrors effect.
Why is clarity so important for an Asscher diamond?
The Asscher cut's step-cut facets act like transparent windows rather than reflective mirrors. Unlike brilliant-cut diamonds that break light into thousands of tiny reflections (masking inclusions), step cuts allow you to see deep into the stone. Any inclusion, feather, or cloud is more readily visible. That is why we recommend VS2 clarity or higher for Asscher diamonds to ensure a clean, transparent appearance.
Is the Asscher cut suitable for an engagement ring?
Absolutely. The Asscher cut is one of the most romantic and distinctive diamond shapes for engagement rings. Its Art Deco heritage gives it timeless sophistication, while the hall-of-mirrors effect creates a uniquely hypnotic sparkle. The square shape with cropped corners sits securely in bezel, halo, and solitaire settings alike. At Riolls, we handcraft Asscher engagement rings in yellow, white, and rose gold.
How long does a custom Asscher diamond ring take?
A custom Asscher diamond ring at Riolls takes 6 to 10 weeks from design approval to completion. This includes sourcing your ideal GIA or IGI certified Asscher stone, creating 3D CAD renders for your approval, hand-forging the setting in solid gold, precision stone setting, and final hallmarking and quality inspection.
Commission your custom Asscher diamond ring
Book a complimentary consultation with our gemologists to select your GIA Asscher diamond and design your bespoke Art Deco setting.