Sorry Richard,
I remember this thread, back when I had my '86ragtop'.
Thought then that all that money tied up in a shiny rock seemed pointless.
I would rather give my loved one something that she could really appreciate (like a Porsche

).
Seriously though, these gals that expect big rocks on their fingers are trouble from the start.
When I met my wife I was'nt earning much and got a relatively 'economical' ring. Since then I offered to chose something larger, to which she stated that she wanted the original as I had cosen it and it had great emotional/ sentimental value! - ya gotta love her!

I hope that this ends painlessly for you and that your fortune improves soon
rgds Ben