Number 13 Charm | Good Luck Charm butterfly necklace This charming ring features a

This charming ring features a moonstone cabochon set into a 14k gold mounting (circa 1865-1980)

The pendant is marked for 14k gold and also bears the maker's mark for the renowned Sloan & Co

An elegant Art Nouveau era brooch featuring a woman emerging from a bloom of flowers

The ring acid tests for 14k gold and bears an unknown pictorial hallmark

Number 13 Charm | Good Luck Charm butterfly necklace This charming ring features aThirteen is a number considered by many to impart good luck. This lucky number 13 charm (circa 1970) measures 0. 85 inches from the top of the jump ring bail to the bottom of the charm by 0. 65 inches wide. It is 18k gold (unmarked but acid tested) and in very good condition. Materials: Gold.