The Asscher cut is a unique shape with prismatic brilliance and a rectangular-faceted
pavilion in the same style as the emerald cut. The standard number of main facets
on an Asscher cut is usually 58 and the typical ratio for the more popular square-shaped
Asscher cuts is 1.00 to 1.05.
The width of the cut corners may vary. With its deep pavilion, faceted culet, high
crown and small table, the Asscher cut allows for tremendous lustre and creates
a fascinating optical illusion known as the “Hall of Mirrors” effect.
The Asscher cut is referred to as a Square Emerald cut on a laboratory certificate,
such as GIA or AGS. Although confusion reigns about what the differences are between
an Asscher cut and a Square Emerald cut, they are in fact the same thing. However,
there also exists a much rarer Royal Asscher cut, which is a patented version of
the original Asscher cut with wide cut corners and 74 facets (instead of 58), and
is classified as an octagonal step cut by the GIA.
4. History & Background
Named after its creator Joseph Asscher, owner of the Amsterdam-based diamond company
of the same name, the Asscher cut was developed in the early 20th century at the
birth of the stylish and popular Art Deco movement. Joseph Asscher rose to fame
several years later when he was commissioned by King Edward VII to cut the famous
3,106-carat Cullinan diamond for the English crown jewels. In 1980 Her Majesty Queen
Juliana of Holland granted the Asscher Diamond Company a royal title in recognition
of the role the Asscher family and company had held in the diamond industry. This
cut’s popularity peaked in the late 1920s but remained a somewhat rare commodity
for the remainder of the century, available only in antique shops and specialised
Art Deco jewellers. At the onset of the new millennium, following considerable research
and development, the Asscher cut was redesigned with new specifications and additional
facets for a more brilliant shine, and has since regained its popularity.