The Cornish Diamond Co. was born from a simple promise: to offer a more honest way to mark life’s most precious moments. From our home in Cornwall, we design exquisite, ethical jewellery that reflects our commitment to quality, conscience, and genuine care.
Our approach to craftsmanship is rooted in meticulous skill and unwavering integrity. We bring each future heirloom to life using ethical lab grown diamonds and sustainable recycled precious metals, ensuring your jewellery is a true reflection of the love it represents.
Planning a surprise proposal can feel daunting. The Yes Ring is the Proposal Ring, designed for the moment you get down on one knee. Propose with confidence today, then choose the forever ring together afterwards.
Love Letters
Every love story is unique. We cherish our couples, learn more about their journey.
