This video of 100 years of engagement rings shows that diamonds last forever, but style and taste change drastically every decade. It's fun to see that some jewelry designs have become popular again (but hopefully those from the 1970s do not). Have a look back in time and see what someone blew three months of their salary on so their betrothed could find excuses to use their left hand for everything.

There should be a follow-up video showing 100 years of marriage proposals, because there would have to be horses involved in some of those decades.

Sources: Mode | BBC