Cancer (22 June-22 July) is the fourth sign of the zodiac, its element is Water.A rare, vintage reverse crystal zodiac charm sits with three other charms to celebrate the star sign Cancer: a Cancer crab symbol, a red sparkling Swarovski crystal to represent a ruby birthstone and a Moon Meniscus charm, the ruling planet of Cancer. All hang from a fine sterling silver chain in a choice of four lengths (please select preferred length below). Metal: All sterling silver.