Sophistication and Fun Onyx and Marble Tic-Tac-Toe Set from MexicoSquares of white and coffee colored onyx stone decorate the face of this tic tac toe board with a sophisticated vibe. With a frame of black marble, the square board is handcrafted by members of Mexico's Sierra Family, finished with petite onyx pieces that represent the two opposing sides. materials: Onyx, marble Color(s) may vary slightly Warning: Choking Hazard. Small parts not for children under 3 years. Velvet paper backing 0. 8 in. H x 6 in. W x 6