Square Cushion Cut Lab Grown Diamonds

Achieving a genuinely square cushion, rather than a slightly rectangular one, requires the same exacting proportion work needed for other square fancy shapes, and that precision, combined with carat weight and clarity, drives most of the price for a lab grown diamond cut this way. A cutter working toward true square proportions has far less room for error than one shaping a rectangular outline.

Depth percentage plays an important role in how brilliant a square cushion lab diamond ultimately appears, since a stone cut too shallow or too deep loses light rather than reflecting it effectively back to the eye. A square cushion pairs particularly well with a cushion-shaped halo, since the surrounding diamonds echo the center stone’s own rounded-corner outline.

Buyers often compare a lab grown square cushion diamond against a square radiant when narrowing down options, since both offer compact, balanced proportions, though the cushion’s softer corners create a noticeably different visual character than the radiant’s crisper geometry. Symmetry across all four corners deserves close attention too, since even a subtle inconsistency becomes visible given how compact the outline is meant to read.

Metal choice shapes how the overall presence of a square cushion lab diamond comes across, with platinum or white gold keeping the stone’s brilliance crisp and cool, and yellow or rose gold introducing a softer, warmer glow throughout the piece. The shape’s compact outline also makes it a popular choice for buyers seeking a more substantial-looking face-up appearance for a given carat weight.

Loose Grown Diamond also sources and builds custom square cushion lab grown diamonds, so you’re never limited to only what’s shown here. Whether you share exact specifications or a reference image instead, we make sure the outcome is a stone built precisely around your vision.