6mm beads 

Throat Chakra
Blue Apatite is a stone of manifestation. It is said to promote communication, creative expression, psychic abilities, expansion of knowledge and stimulate the intellect.

Heart Chakra
Peridot is aka The Stone of Compassion.  It is a purifying and protective stone used to calm anger and attract love.

Throat Chakra
Natural Turquoise is said to open all chakras, primarily the throat chakra.