Very pretty, very fragile.
Don't buy them to roll unless you like flushing money down the toilet.
They will turn to dust either in an unfortunate roll or an unfortunate shifting of your gaming bag.
I unfortunately bought a lot of these glass/composite dice, I wish I had just bought the metal ones, which are durable and will at least function if their finish is damaged.
Also, all of these glass/composite dice also have a high rate of uncentered numbers.