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 cut, characterized by its square shape with deeply clipped corners and broad step facets, creates a repeating pattern of light and dark known as the 'hall of mirrors' effect, offering a more measured sparkle than the round brilliant cut.
Blackburn reports growing demand for Asscher cuts from clients who desire historical character without necessarily opting for an antique design. '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 structural quality allows the cut to appear crisp and architectural in one setting or softer and more romantic in another, providing a versatile foundation for custom work.
The design process at C. Blackburn Jewelers begins with the center diamond. Blackburn studies the stone's outline, corner proportions, table, depth, and reflection pattern before developing the surrounding design. Because the Asscher's large, open facets make its interior especially visible, clarity and precise cutting are paramount. The setting can either extend the diamond's geometry with step-cut side diamonds, create a gradual transition with tapered baguettes or trapezoids, or introduce a livelier sparkle with brilliant-cut accents.
Metal choice further influences the ring's character. White gold or platinum blends with a colorless diamond to emphasize clean Art Deco geometry, while yellow gold warms the frame and accentuates the clipped corners. Engraving adds texture, and a restrained band can yield a minimalist look. Prongs and the gallery must protect the clipped corners without obscuring the outline, and an open gallery prevents a large stone from appearing heavy in profile.
The Asscher cut dates to 1902, when Joseph Asscher developed and patented the original design in Amsterdam. Its 58 facets, high crown, small table, deep pavilion, and cut corners set it apart. It became fashionable during the Art Deco era of the 1920s and 1930s but waned as brilliant cuts dominated. Interest returned in the late 20th century, and in 2001 the Asscher family introduced the Royal Asscher Cut with 74 facets.
Blackburn believes the cut's adaptability drives its renewed popularity. 'The cut brings its own history and personality, but it does not dictate what the finished ring has to be,' he said. 'That leaves room to create something personal rather than simply reproduce a period style.' For couples seeking a recognizable yet unconventional engagement ring, the Asscher cut offers a blend of heritage and modern flexibility that is increasingly appealing.
