Updated as of June 2026
Cushion Black Diamond
A cushion cut is a soft square with rounded corners, romantic and vintage in feel. In Black Diamond (black, Mohs 10) it keeps the color crisp and bright.
Why the cushion cut works for Black Diamond
A soft square with rounded corners, romantic and vintage in feel. Black Diamond reads more for color than fire, so a cushion cut is about shape and color rather than sparkle. At Mohs 10, Black Diamond holds a crisp cushion outline and stands up to everyday wear. Treatment to expect: irradiation or heat (most stones treated black).
Other Black Diamond cuts
Round Black DiamondOval Black DiamondEmerald Cut Black DiamondPrincess Black DiamondPear Black Diamond
More on this stone: Black Diamond overview, price guide, and the cushion cut guide across stones.
Frequently asked questions
Does Black Diamond look good in a cushion cut?
Yes. Black Diamond reads more for color than fire, so a cushion cut is about shape and color rather than sparkle. It is hard enough to hold a crisp outline.
How much does a cushion Black Diamond cost?
Black Diamond runs about $200 to $3,000 per carat. Shape affects price modestly, with round usually the slight premium.
What setting suits a cushion Black Diamond?
Black Diamond pairs well with white gold, platinum, yellow gold. A solitaire keeps it simple.