How big is a 1 carat square cushion diamond?

A 1 carat square cushion diamond typically measures about 5.9 x 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 lab grown diamond cost?

Today our 1 carat square cushion lab grown diamonds range from $448 to $7,209, across 3,827 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 lab grown diamond has the same chemistry, hardness and sparkle as a natural diamond, at a fraction of the price, which is why it is a popular way to reach a larger size. Today the lowest priced 1 carat square cushion diamond in our stock is $448 lab grown, against $1,466 natural. 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 Lab Grown Diamonds

Browse 3,827 certified 1 carat square cushion lab grown diamonds, each with an independent grading report and prices from $448. Every stone is a real diamond grown in a laboratory, with the same sparkle and hardness as a natural diamond, and stock updates daily.