The mineral with glassy luster, and milky white is Quartz
Quartz
Crystalline quartz is has a glassy luster. Other forms of quartz can have a dull luster.
Quartz has a nonmetallic, vitreous luster.
Quartz has a vitreous luster.
Quartz in general has a glassy or vitreous luster.
yes it is not a metal, but a crystal
Pure quartz (and not crystallized) is transparent.
Milky quartz is caused when fluids are trapped in the crystal early in its formation. Milky quarts is considered a flaw of the quartz by some.
Like quartz it has a glassy luster
milky quartz is either metamorphic or igneous
Quartz