Amethyst:
Encourages selflessness and spiritual wisdom
Excellent stone for meditation and scrying
Helps with dream recall
Protects against Psychic attacks 
Best Crystal Pairings:
Smoky Quartz, Hematite, Tiger Eye, Rainbow Fluorite
Correlating Zodiac Placements:
Aquarius, Pisces, Aries, Sagittarius
**You do not need to have these placements in your astrological chart to work with the crystal, it will just have a stronger effect for said placements!**
 
Tiger Eye:
Very grounding 
Assists in accomplishing goals
Brings good luck to wearer
Promotes changes in oneself
Best Crystal Pairings:
Moonstone, Citrine, Carnelian, Smoky Quartz
Correlating Zodiac Placements:
Leo, Capricorn , Gemini, Taurus
**You do not need to have these placements in your astrological chart to work with the crystal, it will just have a stronger effect for said placements!**