Did you know that there were 28 varietal glasses found on the moon?
That is alot of different colored volcanic glasses.
These 17 specimens are analogues of the samples brought to Earth
by the Apollo astronauts. Many of the samples are rare, and 4 glass
vials contain carefully created simulants of lunar dust, lunar soil, and
lunar volcanic glasses. Very hard to find items in this well-designed
Also see: "Pocket Guide to Lunar Mineralogy" to go with it!