We’ve seen our share of light-up jewelry over the years, but for some reason — probably power — it’s almost always earrings or necklaces. So when we saw [ROBO HUB]’s LED ring, we had to check it out.

Ringly, the maker of a line of smart jewelry for women including a high-tech ring that buzzes and lights up when you receive a phone call or text, has raised $5.1 million in Series A funding led by ...