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 be daunting. The Yes Ring is a beautiful stand-in that lets you get down on one knee with complete peace of mind, knowing you and your partner can choose the perfect ring together.
Love Letters
Every love story is unique. We cherish our couples, learn more about their journey.
