Antique 1909 Imperial Russian 56 gold brooch with ruby and pearls - Au Diamant du cap

Antique Imperial Russian 56 rose gold brooch 
with seeds pearls & ruby cluster 
Presented in the box  
Brooch length 56 mm, weight 3.0 g 

Russian Romanov Imperial solid gold hallmark: 
Anchors (city Sankt Petersburg),  
Maker Manien Maria Fyodorovna - MM 56

56 old Russian Tsar Imperial gold standard 

( 56 gold carat - like 14K 14ct 583)

By Russian Goldsmiths catalogue:

Gold and Silversmith in Russia (1600-1926) - published in Moscow 2002

Maker and maker mark: 

in English: 2608. Manien Maria Fyodorovna
The owner of the store "Au Diamant du cap", mentioned
from 1909 to 1912, Nevsky Passage, 11. St. Petersburg.
Initials on the stamp: MM

in Russian: 2608. Маньен Мария Федоровна
Владелица магазина «Au Diamant du cap», упоминается
с 1909 по 1912 год, Невский Пассаж, 11. С. Петербург.
Инициалы па клейме: ММ

in French: 2608. Manyen Maria Fyodorovna
Le propriétaire du magasin "Au Diamant du cap", mentionné
de 1909 à 1912, Nevsky Passage, 11. Saint-Pétersbourg.
Initiales sur le timbre: MM

Condition: seen photos (Excellent - just general used)