Black Obsidian:
Provides insight and protection from negative influences
Combats self defeating pattern
Emphasizes male qualities 
Helps you Integrate spirituality into everyday life
Strong spiritually grounding
 
Chakra: root
Zodiac: Saggittarius, Scorpio
 
Rose Quartz:
Promotes self healing and self love
Known as the stone of unconditional and universal love
Creates a calm atmosphere dispelling negativity
Fortifies relationships and promotes forgiveness 
Encourages self forgiveness and self trust and self worth
Chakra: Heart
Zodiac: Taurus, Libra