Blue Agate Stone
Affinity with the signs: Libra, Leo, Gemini, Crab, Virgo, Pisces and Scorpio.
It was revered by the ancients and considered the stone of luck, courage and strength.
It brings good luck in matters related to love and passion.
Approximate dimensions: Between 12mm to 20mm
The affinity of the stones with the signs just means that there is potentially more reverberation between them. But it shouldn't be the reason to look for another stone if it looks right to you, regardless of your sign.