Zodiac: a rare jewelled gold and guilloché enamel egg pendant, workmaste𓆏r Nikolai Chernokov, probably for Bolin, St Petersburg, circa 1900

enamelled in deep blue over engine turned ground, decorated with the Scorpio zodiac sign to the front, the reverse set with diamond stars, struck to loop with workmaster's initials, 56 standard

height 1.5cm, 1/2 in.