Can I wear my engagement ring in the shower without loosening the stones?

You can wear your engagement ring in the shower without loosening the stones, but I'd still rather you took it off. The water alone won't loosen properly set stones. Gold doesn't dissolve in warm water, and diamonds aren't going to soften under shampoo. What actually loosens prongs is impact, repeated snagging, and years of soap scum and conditioner building up behind the stone until someone scrubs at it with a towel or a toothbrush. The shower hands you all three of those risks in about ten minutes.

What actually loosens stones

A stone starts to move when a prong tip gets bent, worn thin, or snapped. That happens from knocking the ring against tile, catching a prong on a loofah, or dragging wet hair through the prongs every morning. I've seen prong tips lifted by a single strand of hair more times than I can count. You won't notice it that day. You'll notice three weeks later when the diamond rattles against the setting every time you move your hand. By then the prong has to be retipped or the whole head replaced, and that runs anywhere from $75 to about $240 depending on the metal and the setting.

Water and soap don't chemically loosen prongs. That's a misconception. But they make your fingers slippery, especially with conditioner on the skin, and a ring can slide off a soapy hand without warning. I've had two clients lose rings down the shower drain in the past year. One of them, a man named Marcus, got his fiancée's ring back only because the trap under the drain was reachable and we could fish it out before it reached the main line. The center stone survived. The prongs did not enjoy the ride.

Last March a client named Priya brought in a 1.19 carat oval in a four-prong setting, and she'd worn it in the shower every single day for about nine months because she was sure water and shampoo couldn't hurt it. The prongs weren't loose from water. They were loose because conditioner and dead skin had packed into the space between the pavilion and the basket, and she'd been pressing the cloudy stone with her thumb trying to clean it. That pressure, repeated daily, lifted one prong just enough that the stone started to shift. We fixed it with a retip and a proper ultrasonic cleaning. Total was about $95, and the lesson cost her nothing.

If you refuse to take it off, close the drain, avoid getting conditioner on the ring hand, and rinse the ring under plain water before you dry off. But I keep a small ceramic dish on the bathroom vanity for exactly this reason. Ring goes in the dish before the water comes on. It saves the prongs, the drain, and the retipping job I'd otherwise be doing next spring. Take the ring off.