People buy rings by how they look sat on the counter under shop lighting, then wonder why their hand looks odd a week later. A ring reads completely differently on a moving hand than it does lying flat and still, and that's the bit nobody checks before paying.
Gold tone and silver still do most of the heavy lifting because they go with whatever else is on your hand that day, but the finish matters more than the colour. A brushed or matte gold sits quieter than a high shine one, and I find it forgives the odd scratch far better. White metal rings, proper silver or white gold plated, are lovely on their own but show fingerprints and soap scum faster than you'd expect, so if you're someone who washes their hands forty times a day for entirely sensible reasons, a slightly duller finish will look better by Wednesday than a mirror polish will.
What a ring clashes with is mostly other rings, which sounds obvious until you've put four chunky stacking bands on one finger and watched them spin round and knock into each other every time you pick up a mug. Thin bands stack happily. A wide statement ring wants space either side of it, not a row of thin bands pressed up against it fighting for room. Mixing warm gold and cool silver on the same finger can look intentional or can look like you got dressed in the dark, and the difference is usually how much of each metal is actually on show.
The honest limit is that rings take more punishment than almost anything else you wear, because hands do everything. Statement rings with stones set proud of the band catch on jumpers, bag straps, car doors, all of it, and a big one is genuinely a poor choice for anyone who works with their hands all day, mine included some mornings. Thin plated bands also won't survive long term daily wear if you're someone who's constantly washing up or at the gym, the plating wears thin exactly where the metal rubs against itself or against another ring.
What separates a decent ring from a disappointing one is mostly in the band itself. Pick it up and you can usually tell, a solid, slightly weighted band with a seamless join feels completely different to a hollow one that pings if you tap it on a table. Stones should sit properly in their setting with no visible glue, and the inside of the band should be smooth, because a rough edge or a sharp solder seam will announce itself to your finger within the hour.
No ring, however well made, will survive being worn in the shower every single day without eventually showing it somewhere.