It's a hinged box, and the hinge is in very nice working condition. The glass interior cannot be removed. While the glass is intact with no cracks/breaks, there's a tiny dark spot on the glass and a little discolored area to the right - see photo #8 - all pretty insignificant.
The box is marked empire art gold e. On the inside of the lid. 2.25 inches high x 3.75 wide. The round glass inset has a diameter of 3.75 and a depth of 1 inch. This item is made of metal and glass, guilloché enamel, green glass rhinestones.