Loose diamonds

A loose diamond is one that has not yet been set into jewellery. Choosing a loose diamond first lets you compare stones on their own merits, then pair your favourite with an engagement ring setting made to fit it.

Both are real diamonds with identical sparkle and hardness. Lab-grown diamonds let you choose a larger or higher-grade stone for your budget, while natural diamonds offer rarity and heirloom appeal. Our diamond guide compares them side by side.

For most engagement rings we suggest an Excellent or Very Good cut, F to H colour and VS2 to SI1 clarity. Within that range, diamonds look bright, white and eye-clean while leaving room in your budget for carat weight.

GIA and IGI are independent gemmological laboratories. Their report confirms a diamond’s shape, carat, colour, clarity and cut, and states whether it is lab-grown or natural. Use the Certificate filter to show stones graded by either lab.

Yes. Most diamonds include a 360° video, and you can book an appointment at our Hatton Garden showroom to view your shortlist in person, side by side and under different lighting.

Open a diamond and choose “Choose a setting” to browse our engagement rings, or book an appointment and our designers will create a bespoke setting. Every ring is handcrafted to order in Hatton Garden.