Round Rose Gold Medallion in Purple Amethyst The Zodiac Sign Pendant is a necklace with an amethyst-accented Zodiac constellation plated in rose gold. With this zodiac constellation pendant necklace, you may create a cosmic connection to your horoscope! horoscope sign for those born in October. hung on a cable link chain, this piece is made of polished rose gold and satin. Zodiac constellation pendant necklace with amethyst accents and a spring-loaded clasp.