Do you think an engagementring has to be a diamond?

Just curious. I've always had people say it has to be a diamond and $1000s of dollars. My boyfriend and I actually opted for a sapphire ring that was a lot cheaper than a thousand. But was exactly what I wanted. But is it breaking some sorta tradition to not go with a diamond?

Updates
+1 y
https://ibb.co/RbPZ3M7

That's what my ring will look like just with the band being silver and not gold
Do you think an engagementring has to be a diamond?
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