Art deco jewel clock. Cartier ? Boucheron ?

A stunning art deco clock.
Back is brass. Top is silver.
Square of the dial seems to be gold.
Stones are Marcasite, Onix, Lapis Lazuli and Jadeite.
Dial is stone. (unidentified but possibly jade)

A stunning quality clock. Circa 1925. Excellent condition.
Cartier or Boucheron quality.
93cmm high. 80mm width.