Vintage Mexican Hand Carved Obsidian Tribal Mask For Sale

This is a lovely vintage obsidian hand carved tribal mask from Mexico featuring a woman wearing flower-shaped earrings. The surface is smooth and beautiful and when you place it in the light it sparkles with hues of gold. (It is hard to photograph without a reflection.)
It measures approx. 4.5 inches tall and 6.5 inches wide at the widest point. When lying flat, it measures approx. 2.25 inches high. It is in good vintage condition with light age-related wear and a patch that shows scratching/scuffing on the bottom (not visible when the mask is upright).
Unmarked.