Antique Russian green enamel glass caviar or mayo set ?

This is a very exquisite set. It consist of the bowl and saucer. It is wonderfully made and has blue, white and red enamel work with gold gilt on the outside of the bowl and the rim of the saucer. The bowl measures 4 1/2 in. wide and is 4 1/8 in. at the mouth. The saucer is 6 1/2 in. in diameter. I'm not for certain exactly what this set was used for, so if anyone has any clues, feel free to enlighten me :) I do know however that it must have been a fancy table that this was set on and in a very wealthy home. Enjoy!