Our loose gemstone service at Hatton Garden Bespoke Jewellery gives you direct access to a curated selection of sapphires, rubies, emeralds, aquamarines, tourmalines, spinels, and rare fancy gems from the most trusted supply chains in the world. Every stone is hand-selected by our buyers before it ever reaches our studio, assessed for colour, clarity, cut, and origin - so when you commission a bespoke piece, the starting point is a stone we would be proud to wear ourselves.

Precious stones we work with regularly include blue sapphires (Ceylon, Kashmir, Madagascar), fancy sapphires (pink, yellow, padparadscha), rubies (Burmese, Mozambican, Thai), emeralds (Colombian, Zambian), and aquamarines from Brazilian and African sources.

Semi-precious and collector stones include tourmaline (including Paraiba), spinel, tanzanite, topaz, peridot, garnet (including tsavorite and demantoid), morganite, alexandrite, and cultured pearls. For anyone planning a truly unusual commission, we also source rare stones to order - demantoid from the Ural Mountains, unheated Kashmir sapphires, Burmese pigeon-blood rubies, and Colombian muzo emeralds.

Certification and ethics · every significant centre stone is supplied with independent certification from world-leading coloured-stone laboratories - Gubelin, SSEF, GIA, GCS, or AGL. Certificates confirm natural origin, disclose treatments, and for sapphires and rubies often specify country of origin (which significantly affects value). We only source from suppliers who can demonstrate full chain-of-custody documentation.

Hardness and durability - not every beautiful gemstone is suitable for every setting. For engagement rings and other daily-wear pieces we recommend stones at 7.5 or higher on the Mohs scale: sapphire (9), ruby (9), spinel (7.5-8), aquamarine (7.5-8), tourmaline (7-7.5), topaz (8). For gemstone engagement rings we advise protective bezel or halo settings on softer stones like emerald to shield the crystal from knocks. Opal, pearl, and turquoise are best reserved for earrings, pendants, and dress rings.

How to start a gemstone commission · tell us carat range, colour preference, origin (if relevant), and budget. Our buyers present a curated parcel of stones within two to four weeks - often sourced direct from cutters in Sri Lanka, Madagascar, Thailand, and Mozambique. You then select your stone in person at our Hatton Garden studio or via video call, and we design the setting around its exact dimensions. Contact our team to begin, or browse completed commissions in our gallery.