If you’ve landed here, chances are you’ve been at Ideas Fest 2026, or someone who was there thought you should see this.
Either way, welcome. We’re The Cornish Diamond Co., and we’re changing the way people get engaged.
Most people propose with an engagement ring chosen in secret and hope they’ve got it right. We do things differently.
The Yes Ring® is the ring you propose with.
Once they’ve said yes, you design the forever ring together with our goldsmith Olivia, either here in Cornwall or online.
The proposal stays a surprise, but you don’t have to guess the ring they’ll wear for the rest of their life.
YOUR IDEAS FEST OFFER
Ideas Fest is about people building things that matter.
We loved that, because so are we.
So, whether you met us there or this page has been shared with you by someone who did, we’d like to give you something a little special.
When you create your forever engagement ring with The Cornish Diamond Co., we’ll upgrade your centre lab grown diamond by half a carat, on us.
The maximum centre lab grown diamond size after the complimentary upgrade is 2.5 carats.
And there’s no need to rush. Your Ideas Fest offer is valid until 10 September 2027.
