These are also 500 grams (17.7 ounces) and they come in the small 62 gram blocks as well.
That is a 62 gram (2.2 ounces) block of Caramel for reference on the top left.
It is very exciting to have some of these colors in the big block now! I for one can never get enough Opaque White and Black.
And for those of you that want to go to the store, Clay Factory index page http://www.clayfactory.net/