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Inventors of the unique Cornish Tin & Gold™ and Cornish Tin & Silver™ jewellery, containing genuine shipwrecked Tin. We are a proud independent family run Cornish jewellers, going back four generations, since 1890!

26 Arwenack Street, Falmouth, TR11 3JB 15–17 Meneage Street, Helston, TR13 8AA +44 1326 572154


01326 572154/317222

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Ocean Diamonds

ocean diamonds

Beneath the Ocean lies untouched treasure, waiting to be discovered. Our diamonds started their treacherous journey to the sea millions of years ago, carried along through torrent and flow by the patient power of rivers. Only the most precious and resilient diamonds survive this natural filtration. These are retrieved from the depths of the sea by our divers so that they can continue their journey with you.

Responsible harvesting

Along the Namibian and South African West Coast local divers venture out between storms and pick out Ocean Diamonds lodged between gullies and hidden within gravel beds, a natural and environmentally friendly method of recovery. Our company, Ocean Diamonds Ltd, monitors and audits harvesting to assure that each stone can be rightfully branded a true Ocean Diamond.

Natural stones

Ocean Diamonds are natural and free of artificial treatments. Cutting and polishing is done to bring out the brilliance and beauty of the natural gem.

On rare occasions crystal diamonds are discovered exhibiting the classic octahedral diamond form. It would be a travesty to cut these magnificent gems of the sea and we offer these as nature intended, in their untouched and natural state.

You may also be assured that Ocean Diamonds are never a source of funding for human conflicts.

Choosing a diamond

Choosing the finest nature has to offer, we supply certificated Ocean Diamonds and offer a careful selection of stones, both cut and uncut. We will help you select exactly the right diamond for you.

gold ring
cornish tin & gold diamond ring

Wearnes works alongside Ocean Diamonds to create the perfect piece for you. The diamonds are available to buy loose or set in jewellery made by us. Whether you’d like them to be set in platinum or gold, or even our unique alloy of Cornish Tin & Gold please don’t hesitate to contact us.

Please take a look at this stunning engagement ring, made by us locally in Falmouth, Cornwall. This ring is set with a sparkling 0.45 ct Ocean Diamond and set beautifully in Platinum, the cage and prongs enhance the sparkle of this stone.

0.45ct Colour E, VVS2, RBC and GIA certified.

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