A little fifty round single-cut diamonds, this Aries zodiac necklace plated in yellow gold is stunning. Mars, the Roman god of war, rules Aries, which is symbolized by the ram. Give the Aries necklace to people who were born between March 21 and April 19, as these fire signs are known as bold joyful, and active. AAA+ diamonds set in a yellow gold-plated Aries zodiac necklace.