A titanium ring is a very special kind of ring made out of a really strong metal called titanium. It's kind of like the strongest metal in the whole world! Imagine if you had a toy that was made out of really strong plastic that you couldn't break, that's what a titanium ring is like for grown-ups.
Some people like to wear titanium rings because they're really hard to scratch or dent, so they'll look nice and shiny for a long time. Plus, titanium is really light, so it won't feel super heavy on your finger like other rings might.
When you get a titanium ring, it's made by taking a big piece of titanium and cutting it down into the shape of a ring. Then, they polish it up to make it shiny and smooth. But just because it's strong doesn't mean it can't be pretty too! Lots of titanium rings have really cool designs on them, like patterns or special colors.
So if you ever see a grown-up wearing a shiny, tough, and super cool ring, it might just be a titanium ring!