How big is a 3 carat square cushion diamond?

A 3 carat square cushion diamond typically measures about 8.4 x 8.2 mm, based on the stones in our stock today. Exact measurements are on each stone's certificate.

How much does a 3 carat square cushion lab grown diamond cost?

Today our 3 carat square cushion lab grown diamonds range from $1,100 to $71,841, across 3,041 stones. Colour, clarity, cut and the exact carat weight make the difference.

Should I choose a natural or lab grown 3 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 3 carat square cushion diamond in our stock is $1,100 lab grown, against $24,458 natural. Both are graded on the same 4Cs and come with a certificate.

What colour and clarity should a 3 carat square cushion diamond be?

At three carats colour and clarity are easy to see, so we suggest F or G colour and VS2 or better clarity, with VS1 or better for step cuts.

3 Carat Square Cushion Lab Grown Diamonds

Browse 3,041 certified 3 carat square cushion lab grown diamonds, each with an independent grading report and prices from $1,100. Every stone is a real diamond grown in a laboratory, with the same sparkle and hardness as a natural diamond, and stock updates daily.