Your site rocks and "rolls!" I am giving marbles, game instructions, and nets of marbles to all the kids I know including my own. This is such a fun game to share and you have everything an enthusiast could ask for on your site.
Size is as-packaged, or the diameter of loose marbles. ("D" is the diameter of round items other than marbles.)
Malachite is a mineral featuring rich alternating bands of light to dark green. These examples feature jewelry-grade tightly-alternating bands and are exceptional examples of this eye-appealing gemstone.