Antique Art Nouveau Silver Chalcedony.

Antique pendant from the early 1900s is beautifully crafted in 800 silver, featuring a luminous blue chalcedony (or agate) cabochon set in an ornate floral frame. Decorated with Art Nouveau-style relief rose blossoms, it echoes the distinctive aesthetic of Adolf Mayer, a known German jeweler of the Jugendstil movement.

Stamped 800, It comes complete with a silver chain. 

Measurements:
Pendant Height: 6.5 cm (2.5 in)
Pendant Width: 5 cm (1.9 in)
Cabochon Size: 3.3 × 2.3 cm (1.2 × 0.9 in)
Pendant Drop (from chain): 28 cm (11 in)
Chain Length: 42 cm (16.5 in)
Weight: 23.2 g (0.8 oz)

Condition:
Excellent antique condition with minimal signs of wear, a beautiful patina, and a glowing cabochon stone.