This year, it's both a big birthday and a big wedding anniversary, and DH has been "persuaded" that an eternity ring to add to my engagement and wedding ring would be a suitable gift! But I'm not sure what to get. Photo attached with current rings - they're very narrow white gold bands and the engagement ring is a sapphire flanked by two diamonds. I'm thinking a fairly narrow white gold diamond eternity ring that would sit under the engagement ring similar to the wedding band? But I think it would need to be wider than the other two bands so not sure if it would look a bit odd? Any other suggestions / ideas much appreciated. Other option would be to get a separate ring on my other hand, but think I prefer the idea of stacking...