Lab-grown diamonds · London
Sustainable luxury, made to dazzle.
Thoughtfully designed jewellery set with lab-grown diamonds — earrings, bracelets, necklaces, rings and bespoke pieces — designed in London, made to order and crafted in 14 days.
- ✦Made to order · 14 days
- ✦Lab-grown, conflict-free
- ✦Designed in London
- ✦Tracked worldwide shipping
The Collections
Designed for every moment
Our Signature
The Thia Cut
Meticulously designed and expertly crafted, each Thia cut diamond showcases a unique brilliance that sets it apart from traditional cuts. Our skilled artisans use advanced techniques to bring out the maximum sparkle and fire in every stone.
Rigorous quality checks at every stage — from the selection of raw materials to the final polish — ensure jewellery of unparalleled excellence.
Our Story
Born in London, grown with intention
Inspired by the vibrant culture of London and a passion for sustainable luxury, Thia Diamonds was born from a desire to redefine the diamond industry — creating beautiful lab-grown diamonds that not only dazzle but also respect our planet.
The unboxing
Wrapped and ready to gift
Every order arrives in our signature cream gift bag, tied with a green ribbon — a quiet, considered unboxing that is ready to be given the moment it reaches you.
Made to Order
Every piece is crafted for you over 14 days, ensuring a unique creation tailored just for you.
Ethically Grown
Genuine diamonds, grown in advanced laboratories — sustainable, conflict-free, and brilliant.
Designed in London
Traditional artistry meets contemporary design, reflecting the vibrant culture of Britain.
Made to order
Questions before ordering?
Every piece is crafted for you over 14 days. Our team can help with sizing, customisation, and bespoke commissions.