Starphire® glass contains less than 10 percent of the iron present in conventional glass. Because of its low iron content, Starphire® glass allows more light to pass through it than conventional clear glass. But what makes STARPHIRE ® truly unique is its spectacular blue edge. Unlike conventional glass, which becomes progressively greener as thicknesses increase, Starphire® glass gains a distinctive blue edge while the surface of the glass remains ultra-clear. Its stunning clarity, brilliance and luxury will enhance your bathroom renovation.