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Independently certified, most by IGI · Laser inscribed
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5 Carat & Above Lab Grown Diamonds

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Buying guide

Choosing 5 carat & above lab grown diamonds.

A 5 carat round measures about 11 mm. Stones this size are where lab grown makes the biggest difference: a comparable mined diamond would cost many times more. Check proportions carefully, because a deep stone can carry weight without looking larger.

Five carats and up, including more than 400 stones above six carats and 179 above ten. These are the rarest stones we cut, and each one is photographed and graded individually.

5 carat and above lab grown diamonds at a glance

  • 626 colorless stones in stock at 5.00 ct and above, mostly emerald, round, cushion and princess
  • Listed prices from $1,406, median $4,168 (about $521 per carat)
  • Round face-up size: 10.9–11.1 mm for a 5 ct
  • Most stones IGI certified, laser-inscribed, with real photos and 360° video

How to choose a 5 carat lab diamond

Ask for the IGI report and video for anything over five carats, and talk to us about setting. Large stones need a setting engineered for their weight and depth.

Some stones are priced on request. Ask about any of them and our graders in Surat reply personally.

How much is a 5 carat lab grown diamond?

Priced 5 carat-plus stones at Culture Carats start at $1,406. A 5.00–5.19 ct D–F, VVS stone is about $3,700. Larger stones are often priced on request.

Compare sizes on the true-scale carat guide, check prices with the price-per-carat chart, or set your stone in a custom ring made in Surat.

Prices are listed prices in USD for colorless stones, October 2026. They change daily with inventory.

Questions

Questions about 5 carat & above lab grown diamonds.

How big is a 5 carat lab grown diamond?

A 5 carat round brilliant is about 10.9 to 11.1 mm across. A 10 carat round is around 14 mm.

Do you sell 6, 8 and 10 carat lab grown diamonds?

Yes. This collection includes every white stone of 5 carats and above, with hundreds over six carats and some over ten.

What should I check in a very large diamond?

Proportions. A deep stone carries weight underneath without looking larger, so check the depth percentage and watch the 360° video.

Are 5 carat lab diamonds certified?

Most carry an independent grading report, usually from IGI, with the report number laser-inscribed on the girdle.