Asscher-Cut Lab-Grown Diamond 3.5×3.5 mm, Loose

An Asscher-cut lab-grown diamond, 3.5 x 3.5 mm, D to F color, VVS clarity, sold individually. A square step cut with four cut corners.

Asscher gives depth, not sparkle

Step facets are arranged in tiers running toward the center of the stone; looking straight down, it's like a square tunnel narrowing inward. In the trade this effect is called the hall of mirrors. It doesn't flash like a round, but gives a sense of depth and calm.

To be clear: because the tiers are very regular and the facets are clear, any inclusion inside gets multiplied through the layers of reflection. That's why Asscher cuts almost always need high clarity, and Thảo Linh keeps this lot at VVS.

What 3.5 mm is used for

This is a small size in the Asscher range, suited to side stones flanking a center or a square accent on a men's ring. At this size the hall-of-mirrors effect is still subtle because there are fewer tiers; the stone reads as clean and neat rather than striking.

If you want to see the signature depth of an Asscher clearly, go up to 4 x 4 mm or larger. Below that, many people mistake it for a princess cut.

The four cut corners determine durability

Unlike a princess with sharp ninety-degree corners, an Asscher has four corners already cut off. Those cut corners are where the prongs grip, and the reason Asscher cuts chip less than princess cuts with daily wear.

The seat must be cut as an octagon, not a square. A square seat leaves the four cut corners exposed: look closely and you'll see gaps, and the stone won't sit securely.

Care

Flat, tiered facets let dust collect along the steps. Brush gently with a soft brush and warm water, brushing along the tiers rather than across them.

A dirty stone of this shape loses its depth very quickly, because dust clouds the layers of reflection inside. Regular cleaning keeps exactly what makes it beautiful.