Wish I hadn't asked now!! Don't worry, our marriage isn't doomed, we're very happy and will be for years to come. I'm also not a journalist!
For all those saying I'm ridiculous and grabby for insisting on 3 months salary, perhaps have another read of my post. I said I heard it used to be a thing and I was actually asking what people thought was relevant now. I guess there are a lot who just see what they want to see and not what's actually written.
I'd have said yes whatever he got me, but I'm not going to lie, I would have been disappointed if he'd spent significantly less because he knows I would like the ring and he can afford it. If he couldn't afford it or I didn't want something like that then that's completely different. He paid 2 month salary, but he has the equivalent of 3yrs salary in savings, so relatively speaking it wasn't that extravagant.
I also never said someone should buy something they can't afford, that's incredibly reckless. But if you know it's what she wants, then why shouldn't it feel like a significant spend? Bearing in mind that a 'significant' sum is different for different people, as I've said above.
I would have loved a family heirloom too, like a few have mentioned, but neither of our families have anything like that. But that's another thing about it that I love, it's a beautiful, timeless ring that we can pass down to our daughter when the time comes.
I guess what I've learned is that there are many variables, with some extremes who spend too much or nothing at all, but most get what you can afford (bearing in mind savings, earning and future plans) and considering what she'd like.