Unbelievably good.
"When these came I had to check to make sure they didn't send me a more expensive set by mistake! I was just looking for some "starter" runes to tide me over until I could buy or make a nicer set but I don't think that's going to be necessary! They say they're glass but they have the look and feel of stone. Each one is weighty and substantial. Whether or not you think runes have power is subjective, but these definitely don't feel like you're working with something generic or mass produced. Doesn't matter if you're a rune caster or just someone who appreciates the aesthetic of the Elder Futhark, these beautiful rune stones are a sight to behold. The moment you feel the weight of them in your hand you will know you've gotten your money's worth."