Chrysocolla in agate?
A beautifully coloured lightly tumbled specimen of what I think is chrysocolla in agate, with a small area of brown matrix that accentuates the blue-green colour. Its colour comes from its copper content. It is discreetly mounted on a white plastic base.
Just over 3/4 inch (1.9 cm) wide, 3/16 inch (0.5 cm) deep, 9/16 inch (1.4 cm) tall.