Two companies using a marbleized or slag glass that resembled rock agate manufactured most of the ashtrays. The HouzeX Glass Co. in Point Marion, PA made the ashtrays that are round without flat panel sides. Akro Agate in Clarksburg, WV made a similar ashtray that had 10 flat panels on the side. Akro Agate had a booming business until about. The durable glass design resists scratches and stains, while the classic round shape is perfectly stackable for easy transporting, stacking, and storing. Highly functional and practical, this ashtray withstands everyday use at your bar, pub, lounge, or patio! Overall Dimensions: Top Diameter: 4 1/4". Bottom Diameter: 3 1/2"..