8mm beads 

Crown Chakra
Phantom Quartz is a supremely spiritual stone. It  is said to enhance intuition and facilitate a connection with your spirit guide.  It helps bring balance, and is said to balance the yin and the yang.

Sacral, Solar Plexus Chakras
Orange Aventurine is a grounding stone and is one of confidence, self-worth and personal will.

Heart Chakra
White Jade can help one feel calm and peaceful.  It can also help purify the energies of your heart.