Asscher cut diamonds are experiencing a revival among San Diego couples seeking distinctive center stones for custom engagement rings, according to Carl Blackburn of C. Blackburn Jewelers in La Jolla. The square cut with deeply clipped corners and broad step facets creates a "hall of mirrors" effect that is more measured than the rapid sparkle of a round brilliant cut. This renewed interest signals a growing desire for engagement rings that carry historical character without being confined to antique designs.
The importance of this trend lies in its implications for the jewelry market and consumer preferences. As couples increasingly prioritize individuality over convention, the Asscher cut offers a foundation for personalized design. Blackburn notes that the cut can appear crisp and architectural in one setting and softer and more romantic in another, giving him flexibility to create a ring around the wearer. "An Asscher cut gives the entire ring a clear sense of structure," Blackburn said. "Its proportions and faceting can guide every other decision, from the side stones and prongs to the metal, gallery and band." This adaptability allows jewelers to move beyond mass-produced styles and cater to a clientele that values craftsmanship and uniqueness.
From a design perspective, Blackburn begins by studying the center diamond rather than applying a predetermined setting. The stone's outline, corner proportions, table, depth and pattern of reflections all influence the surrounding design. Because the Asscher's large, open facets make its interior especially visible, clarity and precise cutting become paramount. The choice of side stones further shapes the ring's character: step-cut side diamonds continue the center stone's orderly reflections, tapered baguettes or trapezoids create a gradual transition to a narrower shank, and brilliant-cut accents introduce livelier sparkle. Metal selection also plays a crucial role. White gold or platinum blends with a colorless diamond to emphasize clean Art Deco geometry, while yellow gold establishes a warmer frame that makes the clipped corners more pronounced.
Prongs and underlying structure receive equal attention. The setting must protect the Asscher's clipped corners without obscuring its recognizable outline. An open gallery can prevent a substantial center stone from appearing heavy in profile, while hidden diamonds or hand-finished metalwork add subtle detail. This level of customization underscores the cut's versatility and its appeal to couples seeking something recognizable but less conventional.
The Asscher cut traces its history to Amsterdam in 1902, when diamond cutter Joseph Asscher developed and patented the original design. Its 58 facets, high crown, small table, deep pavilion and cut corners distinguished it from other shapes of the period. The cut became fashionable during the Art Deco era of the 1920s and 1930s, fitting naturally with the period's architecture, fashion and jewelry. Its popularity later receded as brilliant-cut diamonds dominated the market. Interest returned near the end of the 20th century as collectors and couples rediscovered vintage jewelry and geometric shapes. In 2001, the Asscher family introduced the patented Royal Asscher Cut, adding 16 facets for a total of 74 while retaining the distinctive clipped-square form.
More than a century after its creation, the Asscher cut continues to move easily between historical and modern design. Blackburn believes that adaptability helps account for its renewed popularity. "The cut brings its own history and personality, but it does not dictate what the finished ring has to be," Blackburn said. "That leaves room to create something personal rather than simply reproduce a period style." For couples in San Diego and beyond, the Asscher cut represents a way to honor tradition while expressing individual taste, a balance that is increasingly valued in the engagement ring market.
