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Ethica Diamonds

About Ethica Diamonds

Founded in 2010 and inspired by the natural beauty of Cornwall, Ethica is a mission-driven brand dedicated to "Kind, not Mined®" fine jewellery. We specialise in diamonds and gemstones grown above ground and precious metals that are 100% recycled or responsibly mined. Built on a people-before-profit foundation, we champion transparency, accessibility, inclusivity, and proudly contribute 1% for the Planet. For us, the true value of a gift lies in its ethics, ensuring every piece reflects both your love and your values. We’re honoured to support a range of causes that protect both people and the Earth, so every purchase helps make the world a little better. Celebrate life’s big moments with expertly crafted jewellery. We specialise in custom and semi-custom engagement and wedding pieces, each made to order with precision and care. For those seeking the perfect gift on a shorter timeline, we maintain an in-stock collection starting from £100. Fine jewellery that reflects your love, your values and is Kind, not Mined®.

Call: 01872222248

Tennyson Nansledan Plen TR8 4SE United Kingdom - Get Directions.

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Elaine. Yellow Dress (2)

Meet Elaine Reffell, owner of Ethica Diamonds

What is the story of Ethica Diamonds?

Ethica Diamonds is a Cornwall-based boutique specialising in conscious luxury through lab-grown diamonds and ethical and recycled precious metals. We offer a range of sustainable jewellery, from accessible gifts starting at £100 to fully bespoke, one-of-a-kind designs.


Tell us a bit about the products or services you offer.

By combining expert one-to-one consultations with ethical craftsmanship, we provide a 5-star experience for those looking to invest in high-quality pieces that align with their values.

Describe Ethica Diamonds in three words.

Conscious, Cornish & Cutting-Edge


Why did you choose Nansledan for Ethica Diamonds?

Choosing Nansledan for the first Ethica Diamonds boutique was a deeply intentional decision. It wasn’t just about finding a beautiful storefront; it was about aligning the brand with a Cornish community. By blending traditional Cornish heritage with forward-thinking technology, the boutique offers a curated, artisan experience that reinvents the classic jewellery tradition for a modern, responsible future.

Are you a business looking for a place to set up shop?

Learn why our community of businesses love Nansledan:

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