Vitro Agate

Vitro Agate Company operated out of Parkersburg, West Virginia, and produced machine-made marbles across several decades of American manufacturing. The company built a recognizable style around strong opaque colors, clean seams, and types that have become staples of serious collections.

All-Reds, Blackies, Tri-Lites, and Conquerors remain the most actively collected Vitro categories. Color quality and seam clarity vary across production runs, and top condition examples with strong color presence are genuinely harder to find than general availability might suggest. Every marble here has been individually selected, inspected, and graded.