MAUBOUSSIN NADIA rubellite ring

Mauboussin ring from the 90s, VINTAGE, in 750 (18k) white gold, Nadia model, set with a central rubellite supported by white mother-of-pearl.
Hallmarks: MAUBOUSSIN Paris mount, 750 gold, number A3179 on the inside + eagle's head and goldsmith's hallmark on the outside of the ring
finger size: 52
dimensions: 15 mm wide
gross weight: 17 gr
dimensions of the rubellite: 10.8 mm x 9.3 mm x 6.4 mm approximately or more than 4 carats (IR: 1.620)
condition: good general condition, some micro scratches and chips on the stone,
in its box and outer box

ref.401