Start with the wearer
Consider daily activities, preferred jewellery and whether the ring will sit beside another band. A design that works in a large photograph may feel very different at its actual height and scale.
Choose shape and setting together
Compare face-up dimensions, not just carat weight. Ask a jeweller how the selected setting protects points and corners, how high the stone sits and what maintenance it needs.
Confirm before ordering
Review the actual stone's report and images. Put stone dimensions, ring size, metal, setting details, final cost and timing in writing. Casta Diva's loose-stone catalogue does not by itself include a finished ring.
Sources and further reading
This English edition draws on the source material referenced below.