Temporarily strung (claspless). "Astrophyllite is a very rare, brown to golden-yellow hydrous potassium iron titanium silicate mineral. Belonging to the astrophyllite group, astrophyllite may be classed either as an inosilicate, phyllosilicate, or an intermediate between the two." That says it all. Not a pretty but an interesting stone. Just the name should make you buy a lifetime supply (2?).