EMERALD. THE TAURUS BIRTHSTONE COLOR IS ASSOCIATED WITH FERTILITY, REBIRTH AND LOVE. Those born in May, or under the star sign of the bull, have Emerald as their birthstone color. Its lush green radiance was said by the ancients to be dewdrops left behind by the bare footsteps of Venus, the goddess of love and beauty. Today, it is thought that emerald signifies faithfulness and fertility in love and passion, along with wisdom and patience. Traditionally believed to have magical properties that kept illness at bay, this color will also enhance Taureans’ natural sensitivity.