Pete,
I did a couple of wedding goblets with 2 captive rings once.
Some smart 4rse shows up and tells me it's wrong, that there are 5 rings in a marriage.
'Go on' I said 'I'll bite.'
So he explains,
'You meet a girl, fall in love and get engaged - an Engagement Ring
You set a date and get married - a Wedding Ring
Some time later, if you are blessed, along come children - Teething Ring
A few years later the family has grown up, money is a little more plentiful, your good lady wants something special - an Eternity Ring
and through all of that there is - Suffering!'