Asscher Cut Lab Grown Diamonds — Wholesale Price List
The Asscher cut — patented in 1902 by the Royal Asscher Diamond Company — is an iconic octagonal step-cut with deeply cropped corners. Its 57-74 precisely aligned facets create the signature "windmill" pattern visible through the table, producing broad, dramatic flashes of light that embody Art Deco elegance at its finest.
Asscher Diamond Inventory & Pricing
Browse our current IGI certified Asscher diamond inventory below. Use the carat slider to narrow your search, or contact us for personalized wholesale service.
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About Asscher Cut Lab Grown Diamonds
Patented by Joseph Asscher in Amsterdam in 1902, the Asscher cut was the world's first patented diamond shape and remained exclusive to the Royal Asscher Diamond Company for decades. The original 57-facet design was updated in 2001 with the Royal Asscher cut (74 facets), which refined the facet alignment to produce an even more dramatic optical effect. What distinguishes the Asscher from a standard square emerald cut is its perfectly square outline, deeply cropped corners creating a near-octagonal shape, and the distinctive windmill pattern — concentric rectangular tiers of parallel step facets that create a hypnotic sense of depth when viewed through the table.
Like all step-cut diamonds, the Asscher's large open table means clarity and color are paramount. For the best visual presentation, Asscher cuts benefit from VS2 or higher clarity and near-colorless grades (G-H or better). The ideal Asscher is perfectly square (1.00 ratio) with a relatively small table percentage (60-65%) and a high crown that creates the depth necessary for the windmill effect to fully develop. Asscher lab grown diamonds from Yuda Crystal are produced using CVD and HPHT technology with IGI certification.
The Asscher cut's Art Deco heritage and geometric precision make it particularly desirable for vintage-inspired engagement rings, collector-grade cocktail rings, and high-end jewelry collections. It is among the rarest diamond shapes — representing a tiny fraction of global diamond production — which adds an element of exclusivity that discerning buyers appreciate. For retailers catering to customers seeking something beyond the mainstream, the Asscher cut offers a compelling point of differentiation.
Frequently Asked Questions
What is the windmill pattern in Asscher cut diamonds?
The windmill pattern is the signature optical effect unique to well-cut Asscher diamonds. When viewed through the table, the concentric rectangular tiers of step-cut facets appear to rotate inward like the blades of a windmill, creating a mesmerizing sense of depth. This effect is only fully achieved when all pavilion facets are precisely aligned — making it a hallmark of superior Asscher cut craftsmanship.
Why are Asscher cut diamonds so rare?
Asscher cuts require exceptional rough diamond quality — the large open table leaves no room to hide inclusions, demanding VS2+ clarity starting material. Additionally, the precise facet alignment needed for the windmill effect requires master-level cutting skill and takes significantly longer than cutting a round brilliant. The combination of high rough quality requirements and labor-intensive cutting makes Asscher diamonds rare — they represent less than 1% of global diamond production.
What clarity grade should I choose for an Asscher cut diamond?
VS1 or better is the recommended clarity grade for Asscher cuts, especially for stones above 1 carat. The large open table and step-cut architecture make inclusions clearly visible — unlike brilliant cuts that scatter light and mask imperfections. For Asscher diamonds over 2 carats, VVS2 or higher ensures the windmill pattern remains the visual focus rather than any internal characteristics.
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