How big is a 1 carat square cushion diamond?

A 1 carat square cushion diamond typically measures about 5.7 mm, based on the stones in our stock today. Exact measurements are on each stone's certificate.

How much does a 1 carat square cushion natural diamond cost?

Today our 1 carat square cushion natural diamonds range from $1,466 to $29,349, across 3,228 stones. Colour, clarity, cut and the exact carat weight make the difference.

Should I choose a natural or lab grown 1 carat square cushion diamond?

A natural diamond is formed over billions of years and each one is rare; many buyers value that origin. A lab grown diamond of the same grades costs far less. Today the lowest priced 1 carat square cushion diamond in our stock is $1,466 natural, against $448 lab grown. Both are graded on the same 4Cs and come with a certificate.

What colour and clarity should a 1 carat square cushion diamond be?

At this size G or H colour and VS2 or SI1 clarity usually look white and clean to the eye, leaving more of your budget for cut and size.

1 Carat Square Cushion Natural Diamonds

Browse 3,228 certified 1 carat square cushion natural diamonds, each with an independent grading report and prices from $1,466. Every stone formed in the earth over billions of years, and stock updates daily.