I've had a few sets of metal dice and one of the issues is that they don't roll quite as well as regular die do. Gravity Dice are lighter and roll better than most metal dice, so they're a great option for actual gameplay instead of just looking pretty on a shelf.
I have had no issues with this set playing DND. I like the color and the case that I chose.
Better than I had imagined, after a rough kickstarter
Metal Polyhedral RPG Dice Set - Ocean Water Teal - Select Your Set & Dice Chamber
These dice are beautiful. They roll great and the anodized case is fantastic. 10/10 would buy from again