Lab-Grown Diamonds – Sustainable & Ethical alternatives

Explore lab-grown diamonds at Arezzo Jewellers — the modern, ethical alternative to mined stones.

Learn how these diamonds are created, how they compare to natural gems, and why they’re identical in beauty and brilliance. Our guide explains everything from sustainability and value to quality and certification, helping you make an informed, confident choice.


Round brilliant lab-grown diamond solitaire engagement ring in white gold

What are Lab Grown Diamonds?

Lab Diamonds are diamonds created in a labroratory using advanced technology that replicates the natural process in which diamonds form deep within the Earth. Just like mined diamonds, they are made of pure carbon and share the same chemical, physical, and optical properties.

How are Lab Diamonds Made?

Two main methods are used to create lab-grown diamonds:

  • High Pressure High Temperature (HPHT): replicates the natural conditions found deep underground.
  • Chemical Vapor Deposition (CVD): Uses a carbon-rich gas to grow diamonds layer by layer. Both methods produce brilliant, durable diamonds that are visually identical to natural diamonds.

Why Choose Lab Diamonds?


Ethical & Sustainable: Conflict-free and environmentally conscious.

Affordable: Lab diamonds generally cost 30-40% less than natural diamonds of the same quality, allowing you to purchase a larger, higher-quality stone for your budget.


Quality: Since lab diamonds are made in controlled environments, there are often fewer imperfections and inclusions than many natural diamonds.

For our budget-conscious clients, we highly recommend lab diamonds, as they offer the same beauty and brilliance as natural diamonds, with no noticeable difference to the naked eye. This allows you to choose a larger carat size at a fraction of the price of a mined diamond.

Shop with Confidence: Certified Lab-Grown Diamonds

every lab-created diamond in our collection comes with a certificate of authenticity. These certificates are issued by reputable gemological institutes, ensuring that each diamond is graded for its cut, color, clarity, and carat weight—just like natural diamonds.

Rest assured, when you purchase a lab diamond from us, you're receiving a certified gemstone that meets the highest industry standards for beauty and craftsmanship.

Looking for a Lab Diamond?

Explore our selection of lab-grown jewellery or speak to us about creating a bespoke piece with a lab-grown diamond tailored to your style.

Lab DiamondsBespoke Ring

Frequently Asked Questions

Find answers to the most common questions about Lab-Created Diamonds

  • Lab-grown diamonds are just as hard and durable as mined diamonds, ranking 10 on the Mohs hardness scale. This means they can only be scratched by another diamond, making them an excellent choice for everyday wear such as engagement rings.

  • Lab diamonds are not typically considered an investment piece. While they offer incredible beauty and durability, their resale value is generally lower than natural diamonds. They are best chosen for personal enjoyment rather than investment purposes.

  • Yes, lab-grown diamonds can be appraised just like natural diamonds. Professional gemologists will assess factors such as cut, clarity, carat weight, and colour. However, their appraisal value for resale is typically lower than the purchase price.

  • On average, lab-grown diamonds are 30–40% less expensive than natural diamonds of the same cut, clarity, and carat weight. This allows you to purchase a larger or higher-quality stone while staying within budget.

  • The first lab-grown diamonds were successfully created in the 1950s for industrial use. Jewellery-quality lab diamonds only became widely available in the last two decades, thanks to advancements in HPHT and CVD technology.