This is what annoys me. The geek and idealist in me doesn't want to give her a diamond because it's not that valuable.
Yet, I don't want to be cheap. I don't want her to feel like I don't value her enough.
But the ring would cost more than the gold contents it contains. And i also stand by the opinion that gold is inherently valueless, and is only valued as a rarity/status symbol.
Yellow sapphire is non traditional and very beautiful. If I had opted for something other than a diamond, I would have chosen something that was very different but still beautiful. My boo desperately wants an opal ring, but unfortunately opal is too soft for daily wear and tear like that, so we would have ended up replacing the stone many times over the lifespan of the ring.
Now, moissanite or CZ for fun jewellery, watches, earrings etc DOES seem like a perfect time to use those diamond-like stones!
Sort of seriously I'm surprised you can't encapsulate the opal in an epoxy or something (CVD cover it or something). Perhaps not at home, but seems like we should have the tech to do that.
Why not get something expensive, yet valuable then?