A 19th century Austrian jewel-set

A 19th century Austrian jewel-set, agate and enamelled-gold mounted snuff box

unmarked apart from later French import marks,

oval, the cover and base carved from striated agate with bands of brown separated by distinct white lines around a crystalline centre, the gold hinge mount with black and white floral enamel border, with applied diamond-set and coloured stone thumb-piece, length 9.5cm.