Women's gold brooch with precious stones, Faberge

A very beautiful brooch, purchased together with the case of the famous Faberge company. Gold, pearls, amethysts. Weight 5.1 g. The nominal stamp of the master "IG" in a rectangle (probably Gunst Johann Alexander. St. Petersburg jeweler, worked for the court supplier Sazikov, worked for Gustav Faberge. He died in 1872, aged 42. Originally from Riga. After his death, Gunst's property was taken over by the jeweler Leopold Zeftigen, an appraiser of the E.I.V. Cabinet, for which he was brought to court, but was acquitted.). The wooden case. Case Size 21*30*77 mm. The fabric base of the lower lid and the base for the brooch are lost. Guarantee of authenticity.