American Fire Glass AFF-STFRLST12-2.0-10-J 1/2" Starfire Luster Fire Glass 2.0 10lb Jar. Starfire Luster Fire Glass 2.0 is one of our most popular fire glass colors for a reason; it's sparkle and shine. With Starfire Luster Fire Glass in your natural gas or propane fireplace or fire pit, your guests will be in awe at it's ice-like quality. Fire Glass 2.0 is able to be used both indoors our outdoors and last the test of time.