Zodiacs...Yup.

Zodiacs and their gems...

Aries: Diamond
Taurus: Emerald
Gemini: Pearl
Leo: Ruby
Virgo: Peridot
Libra: Sapphire
Cancer: Opal
Scorpio: Topaz
Sagittarius: Turqouise
Capricorn: Garnet
Aquarius: Amethyst
Pisces: Aquamarine