Astria 5 Pound Onyx Black Glass Media GLO-BlackAstria 5 Pound Onyx Black Large Crushed Glass Media GLO Black Product Details What are the key features and advantages of the Astria 5 pound Onyx Black Large Crushed Glass Media that make it an excellent choice for creating a sleek and sophisticated look in your fireplace? The Astria 5 pound Onyx Black Large Crushed Glass Media is an excellent choice for creating a sleek and sophisticated look in your fireplace. Its deep black color adds a modern and