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1 Carat Lab-Grown Diamonds Price: How Much Is a 1 Carat Laboratory Diamond?

A 1 carat lab-grown diamond offers strong presence while usually remaining more accessible than a natural diamond of similar quality. Whether you want to know “how much is a 1 carat lab-grown diamond” or how to choose wisely at this size, this page covers the key points.

Start by browsing 1 carat lab-grown diamonds by colour:

Quick Highlights 1 carat refers to weight. Lab-grown diamonds typically come with IGI certificates; Ideal cut is available for rounds. The larger the stone, the more important cut and face-up appearance become.

How Much Does a 1 Carat Lab-Grown Diamond Cost?

Prices for 1 carat lab-grown diamonds are usually lower than natural diamonds of similar quality. At this size the real value often lies in being able to keep a larger carat while still securing strong colour (D/E) and Ideal cut.

How Big Is a 1 Carat Diamond?

1 carat refers to weight. A well-cut round 1 carat diamond typically measures around 6.3–6.5mm. Visual size still depends heavily on cut and proportions.

When buying, also check:

  • Actual measurements
  • Cut grade
  • Whether the face-up appearance is clean and bright

What to Watch for Certificates and Cut

  • Certificate: IGI is the most common and widely accepted choice for lab-grown diamonds
  • Round cut: the highest grade available is Ideal
  • At larger sizes it is even more important not to focus only on carat weight — prioritise fire and cleanliness

How to Choose a 1 Carat Lab-Grown Diamond

  • Colour: prioritise D–E
  • Clarity: aim for eye-clean first
  • Cut: for rounds, prioritise Ideal
  • Certificate: prioritise IGI

At 1 carat, put more attention on cut and face-up appearance, because any weakness becomes more noticeable as size increases.

1 Carat Lab-Grown vs Natural Diamonds

At the same 1 carat weight, lab-grown diamonds are usually better for buyers who want strong parameters and budget efficiency. Natural diamonds suit those who prioritise natural origin and rarity.

What Can You Do Next?

  • Filter 1 carat lab-grown diamonds by colour
  • Prioritise IGI + Ideal cut options
  • Book a showroom visit if you would like to view stones in person

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