Asscher Diamonds


What is an Asscher Diamond?

Asscher diamonds are square shaped stones with step-cut facets. Also known as a square emerald cut, its facets let light stream into the diamond, emphasising colour and clarity. The asscher cut was invented in 1902 by Joseph Asscher, and became popular during the art deco era of the twenties. The shape we enjoy today is the Royal Asscher cut, created in 2001 by Jospeh Asscher’s grandsons. Unlike a princess cut, an asscher diamond has cut corners, just like an emerald shape.

How Many Facets does an Asscher Diamond have?

What Makes an Asscher Diamond Special?

For lovers of the asscher cut, no other stone will do. The stunning step cut facets are a visual departure from any brilliant-cut stone, creating an understated and sophisticated sparkle. Step cut stones reflect the light in a ‘hall of mirrors’ effect, a mesmerising look that catches and holds your gaze. What the asscher cut lacks in glitter, it makes up for in vintage appeal. The deco-esque cut looks incredible in a simple solitaire or luxurious halo, excluding twenties glamour and timeless luxury in any setting.

How do you Know if an Asscher Diamond is Well Cut?

First we consider the visual impact of the stone - how does the fire, brightness, and scintillation appear? Second, the design - how well proportioned is the diamond? Finally, we look at the craftsmanship - how skillfully has the diamond been cut and polished? While asscher stones are not given a cut grading, there are some suggested parameters for a well-cut stone, including;

Length to width ratio: the length to width ratio of a diamond measures how proportional it is. Diamonds which fall within these parameters will be most pleasing to the eye, with a more distinct and even shape. Look for an asscher diamond with a length to width ratio of 1.00 to 1.03 to ensure it appears perfectly square to the eye.

Table: the table is the largest, central facet of a stone. The table needs to be large enough to let lots of light into the diamond, but not so large that the upper facets don’t have room to sparkle. Look for an asscher diamond with a table ratio between 50 - 60%

Depth: a diamond’s depth is the top-to-bottom measurement of a diamond, from its table to culet. The depth ratio compares this measurement with the overall width of the stone. The depth affects the visual balance of a diamond and its brilliance. If a stone is too shallow or deep the light will not refract properly, escaping through the base of the diamond instead of the top. Look for an asscher diamond with a depth ratio between 58 - 68%.

Choosing a Diamond Cut Grade


Choosing an Asscher Diamond Colour

diamond colour guide

Choosing the Clarity of an Asscher Diamond

diamond clarity guide

Is an Asscher Cut the Diamond for You?

You’ve always loved vintage styling, with a particular penchant for the geometric glamour of the twenties. While you adore diamonds, you are drawn more to their clarity and brilliant white light than their sparkle. If your heart longs for just a little glitter, choose a halo engagement ring style and enjoy the beautiful contrast of sparkling round brilliant cuts with your sophisticated asscher.