Diamonds in Hatton Garden

Loose diamonds are diamonds that have not yet been set into a piece of jewellery, such as an engagement ring, wedding ring or pendant. Buying a loose diamond allows you to choose the stone based on its shape, carat weight, colour, clarity and cut before selecting a setting. Explore our wide selection of certified natural and lab-grown loose diamonds and receive expert guidance when choosing a stone for your jewellery.

Yes. Our diamonds are independently certified by recognised gemmological laboratories, including GIA and IGI, depending on the individual diamond. Diamond certification provides an independent assessment of key characteristics such as cut, colour, clarity and carat weight. For ethical sourcing, we work with established diamond suppliers and follow applicable industry standards and regulations when sourcing our diamonds.

Natural diamonds are formed naturally within the Earth, while lab-grown diamonds are created in controlled laboratory environments using advanced technology. Both are real diamonds with essentially the same chemical composition and crystal structure, but they differ in their origin, formation process, rarity and typical price.

The choice between natural and lab-grown diamonds ultimately depends on your preferences, priorities and budget. However, lab diamonds offer a more cost-effective option typically costing 60–70% less for the same grade without compromising on quality or appearance.

Learn more about lab grown diamonds vs natural diamonds

The best way to maximise value is to understand where you can be flexible without sacrificing beauty. For instance, a stone with a lower clarity grade, such as VS2 or SI1, can look just as eye-clean as a higher grade but at a more accessible price.

Similarly, opting for near-colourless stones (G–H grades) often looks just as bright as higher grades in most settings. Prioritise an excellent cut, as this gives the most brilliance. Always buy from reputable diamond jewellers who provide certification from trusted labs such as GIA or IGI. This ensures transparency and helps you make an informed choice.

Start by deciding on your diamond type, shape, carat range and budget, then compare the diamond 4Cs and certification of individual stones. Cut quality is particularly important for a round brilliant diamond because it has a significant effect on how the stone interacts with light.

The right diamond is ultimately a balance between appearance, specifications, personal preference and budget. Regal's diamond specialists can help you compare different stones and explain the characteristics shown on each grading report.

Striking the right balance between these qualities ensures that your diamond engagement ring is as unique as your love story.

Cut is generally one of the most important factors to consider when choosing a diamond because it has a significant effect on how the diamond reflects light and appears to the eye. However, the relative importance of the 4Cs can vary depending on the diamond shape and your personal preferences.

For example, colour and clarity may be more noticeable in some diamond shapes than others. Rather than automatically choosing the highest grade in every category, compare the 4Cs together and consider how they affect the diamond's overall appearance and value.

Book a free consultation and speak with our expert, who will guide you and help you make an informed decision.

Absolutely! at Regal, we offer bespoke services to create natural diamond rings that’s perfect for you. Whether you have a particular design in mind or need guidance, our experts will work with you to bring your vision to life. Book an appointment with us today to design and create your perfect engagement ring, featuring the finest quality natural diamonds.

There is no single “best” shape. The ideal diamond shape depends on your style, budget, and how you want the ring to look on your hand. Round brilliant diamonds are the most in-demand shape because of their exceptional sparkle and timeless appeal, but fancy shapes like ovals, emeralds, radiants, or cushions can offer a distinctive look and better value for money.

Choosing the diamond shape often comes down to a mix of personal taste, finger shape, and lifestyle considerations.

Yes, buying a diamond online is one of the best ways to explore a wide range of options and compare value between natural and lab-grown diamonds. Regal brings the showroom experience to you with high-quality imagery, 360° diamond videos, and expert guidance wherever you are.

Every Regal diamond comes with an independent grading certificate, most often from GIA & IGI, with a unique reference number and we’re dedicated to ensure your online diamond purchase is effortless and stress-free.

Read our diamond buying guide for more information or speak to our diamond experts who can help you understand your diamond’s certificate, answer your questions and compare it with other stones.