Vial of real black sand (magnetite) from Plumas County, CA. Where there is gold, there is black sand, and where there is black sand, there is sometimes gold. Although not guaranteed, your vial of black sand could contain tiny specks of real gold (see the above axiom). Magnetite is heavy iron ore and likes to hang out in the same nooks and crannies that gold does. Each vial measure 1.25" L x .25" diameter. Makes a great gift for the budding geologist, rockhound, or gold-seeker!