Tenax has introduced Lustro Italiano for quartz surfaces. Lustro Italiano 16-ounce quartz stone cleaner provides streak-free cleaning and will not shorten the life of stone sealants. The product contains no harsh solvents to strip away stone’s natural polish. The 5-ounce quartz stone polish has unique properties that will bring out the luster of quartz stone. When compared to other polishes, it creates a deeper longer-lasting shine.