Libra (24 September-23 October) is the seventh sign of the zodiac, its element is Air.A rare, vintage reverse crystal zodiac charm sits with three other charms to celebrate the star sign Libra: a Libra the Scales symbol, a pink sparkling Swarovski crystal to represent a tourmaline/pink sapphire birthstone and a Venus Meniscus charm, the ruling planet of Libra. All hang from a fine sterling silver chain in a choice of four lengths (please select preferred length below). Metal: All sterling silver.