Frequently Asked Questions

Lab-grown diamonds are real diamonds created in controlled laboratory environments using advanced technology that replicates the conditions under which diamonds form naturally. They have the same essential chemical composition, crystal structure and optical properties as mined diamonds.

Yes. Lab-grown diamonds are real diamonds. They are not diamond simulants such as cubic zirconia. The primary difference between lab-grown and mined diamonds is their origin.

The key difference is how they originate. Mined diamonds form naturally beneath the Earth over extremely long periods, while lab-grown diamonds are created using specialised technology in controlled environments. Both can be evaluated using the same 4Cs: cut, colour, clarity and carat.

To the unaided eye, high-quality lab-grown and mined diamonds can appear virtually identical. Specialised gemological equipment and testing are generally required to reliably determine a diamond's origin.

Carbon offers IGI-certified lab-grown diamonds, providing independent grading information about important diamond characteristics such as carat weight, colour, clarity and other identifying details, as stated on the relevant product or certificate.

The International Gemological Institute (IGI) is an independent gemological organisation that grades and identifies diamonds. An IGI grading report provides detailed information about an individual diamond's characteristics and confirms whether it is laboratory-grown.

The 4Cs of diamonds stand for Cut, Colour, Clarity and Carat. Together, these characteristics provide a widely used framework for understanding and comparing diamond quality.

Consider your preferred diamond shape, budget and the 4Cs: cut, colour, clarity and carat. Certification is also important when purchasing a lab-grown diamond. Carbon's diamond information and assistance can help you compare your options before choosing.

Carbon offers lab-grown diamond jewellery designed for different styles and occasions, including rings, earrings, necklaces, bracelets and solitaire jewellery. Availability may vary by collection and design.

Yes. Carbon's collection includes lab-grown diamond rings suitable for engagements and other meaningful occasions. Explore available designs, diamond shapes and specifications to find a piece that suits your preferences.

Depending on the design and availability, Carbon may offer popular diamond shapes such as round, oval, emerald, pear and other cuts. Individual product pages provide the specifications available for each piece.

Available gold colour and karat options are displayed on individual product pages. Depending on the design, selected pieces may be available in yellow gold, white gold or rose gold.

Use Carbon's ring size guide to measure your ring size before placing an order. If you're purchasing a ring as a gift or are unsure about sizing, contact our customer assistance team for guidance.

Keep your lab-grown diamond jewellery away from harsh chemicals and store pieces separately to minimise scratching. Gentle cleaning with appropriate jewellery-care methods can help maintain the brilliance of your diamond and the finish of the metal.

Generally, no. Lab-grown diamonds have the same essential material properties as mined diamonds and can be cared for in similar ways. The appropriate care may also depend on the precious metal, setting and overall design of your jewellery.

Where a piece includes an individually certified diamond, the relevant certification details should be stated on the product page and supplied as applicable with the purchase. Check the individual product information for certification details before ordering.

Carbon provides delivery information during the shopping and checkout process. Please refer to our Shipping Policy for current UK delivery locations, estimated timelines, charges and any applicable conditions.

Eligibility for returns or exchanges depends on the product and the applicable terms of purchase. Please review Carbon's Returns & Exchange Policy before ordering for information on eligibility, timeframes, exclusions and the return process.