The Asscher cut is the square cousin of the emerald, and it carries a heavier vintage identity. Developed in 1902 by the Asscher diamond house in Amsterdam, it is a square step cut with cropped corners and a high crown that creates a stacked, hall-of-mirrors look when viewed through the table. In moissanite, the cut reads architectural and period; it is not a fire bomb, and the customers who buy it do not want one. It is a niche SKU, but it is a high-margin niche because the buyer who wants an Asscher does not comparison-shop it against an oval.
How it differs from an emerald cut
Both are step cuts, but the Asscher is square (ratio near 1.00:1 to 1.05:1) and carries a higher crown and a heavier concentric facet arrangement. Look down through the table and you see nested squares receding into the stone. That optical effect is the whole point. The cropped corners are another defining feature: they protect the sharp square corners that make emerald cuts chip, and they give the setter natural anchor points.
Clarity and color expectations
Like the emerald, the Asscher shows everything inside. A wide table and broad step facets mean inclusions are visible. We stock Asschers in VVS1 only, D-F color. Lower grades exist in the market, but they look murky in this cut. Color matters more on an Asscher than on a round because the broad white facets let any body-color show; an F stone is the floor, D is the sweet spot for premium collections.
Face-up size and wholesale price
| Dimensions (mm) | Diamond equivalent | Wholesale band (USD, D-F VVS1, GRA) |
|---|---|---|
| 5x5 | ~0.5 ct | $22 - $36 |
| 6x6 | ~0.9 ct | $40 - $65 |
| 7x7 | ~1.5 ct | $65 - $100 |
| 8x8 | ~2.5 ct | $105 - $165 |
| 9x9 | ~3.5 ct | $170 - $260 |
Setting tips
The cropped corners want prongs that sit on the cropped edge, not on the sharp corners (which do not exist). A four-prong setting on the cropped corners is the classic look. Bezel settings suit the Asscher well, because the enclosed silhouette reads as a period piece. Art Deco settings with side baguettes or trilliant accents are the natural companion: the geometry echoes the cut. Avoid a heavy pavé halo; it competes with the nested-square effect that makes the cut distinctive.
- Four-prong on cropped corners: the classic, low-profile setting.
- Bezel: period look, protective, best on pendants.
- Side baguettes: echo the Art Deco geometry.
- Avoid heavy pavé halo: it mutes the nested-square effect.
Metal pairs
Platinum and white gold keep the cut cold and architectural. Yellow gold is where the Asscher really lives, though; the combination of a square step cut and 18k yellow gold reads directly to the 1920s and 1930s, which is the aesthetic the customer is buying into. Rose gold Asschers are a small but steady niche for vintage-style bridal.
Who buys Asschers
Three buyer types. Vintage and Art Deco collectors, who want the period silhouette. Customers who already own a round engagement ring and are buying a right-hand ring with a more deliberate look. And design-led boutique retailers, for whom the Asscher is a signature piece rather than a volume SKU. It is not a first-engagement-ring default; expect to sell it to customers who have been shown it rather than customers who walk in asking for it by name.
Durability
The cropped corners are a structural advantage over the sharp-cornered emerald cut. Moissanite at 9.25 Mohs wears well, and the step-facet surface resists scratching. The hall-of-mirrors effect is easy to dull with grime, though; step cuts show buildup faster than brilliant cuts because the broad facets smear when oily. Counsel end customers to clean the stone every couple of weeks with warm soapy water. Ultrasonic is fine on unset stones; once mounted, skip it on prong-heavy settings.
Asscher versus emerald cut
Retailers sometimes confuse the two, and the distinction is worth stating clearly to customers. An emerald cut is rectangular and reads wide and horizontal; an Asscher is near-square and reads stacked and vertical, with the nested-square optical effect down the table. The emerald cut sells on a sleek, modern line; the Asscher sells on a period, Art Deco mood. Pricing overlaps at the same mm size, so the choice is aesthetic rather than budget. If a customer likes the emerald silhouette but wants something more compact on the finger, the Asscher is the upsell.
Resizing and longevity
Asscher settings rarely need resizing because the stone sits low and the band is usually a simple solitaire. When resizing is required, avoid heating the band directly under the stone; moissanite tolerates heat well, but the prong solder can run and loosen the corners. A skilled jeweler can re-tip the prongs without removing the stone, which is the preferred repair. Over decades, the girdle may show light wear and a re-polish restores the crisp step-facet edges.
Because the Asscher is a low-volume specialty, prices stay firm; there is little discounting pressure from comparable stones in other shapes.
The current Asscher range is in the loose stone catalog under Asscher Cut.