Crossword puzzle clue "glass source"

Like the glass, when viewed by someone who's pessimistic about how much liquid is in the glass

Small glass disk used as an ornament in a stained-glass window

Glass-enclosed light source

Source of volcanic glass

Glass source

Source of wealth + source of mozzarella?

No-nos for cleaning glass stovetops

" . . . ___ of many-colored glass": Shelley