Anillo de oro pirita y diamantes planos a private residence commissioned from

a private residence commissioned from architect Piero Portaluppi by the industrialist Necchi Campiglio family in the 1930s

This ring contains a group of twenty-one old-cut diamonds of different sizes

The scan of the raw metal was made on 9 September 2025

eight rose-cut diamonds are set in FAIRMINED white gold

Anillo de oro pirita y diamantes planos a private residence commissioned fromUnique piece made of 18k FAIRMINED yellow gold and natural pyrite with two flat diamonds set in 18k white gold. We respect the natural shape of each pyrite without modifying it, so each piece is unique and unrepeatable. Size 15 Available for immediate shipment. Book an appointment in our atelier or contact us to commission a custom piece in the size of your choice.