If you're down for the footy this week or next, consider nipping into the Jewellery Quarter in Brum.
or someone like thisUse this guy Home I couldnt recommend him enough, you buy the metal off him (if you pay up front it’s trade price) he will work with you to design it, then make it, his wife is a gemologist who will help you choose the stones, 4 c’s etc.
If once you propose your Mrs doesn’t like it he will melt it down and start again using her input.
He did our engagement rings 11 years ago, I paid 2.2k in total they valued at over 4K for insurance as soon as they were ready, he’s lovely bloke, his website is terrible .