Tolkien fans, your aid is needed by a future Troll-Dad

I'm getting married next year and my fiancée has convinced me to wear a wedding band, having never been a fan of wearing jewellery - even watches - this took some doing. I've said I would wear a golden band on one condition, that I get to have the inside inscribed with the same inscription as the One Ring, in the original Tengwar script.

Essentially my reasoning is as follows:

One day I'm going to have kids, and one day I'm going to read them the Hobbit and then the Lord of the Rings.

Eventually the day will come when I finish the last page of ROTK, and I turn to my kids and say "That's it, that's all he wrote. But I know what REALLY happened to the One Ring." I will then take off my wedding band and reveal the inscription inside.

Now. Obviously this is a long-term project. Possibly decades in the making. Can anyone recommend a good jeweller/inscriber?