Aventurine stones are crystals that contain a good amount of quartz in them, along with inclusions of various other minerals, which gives them their specific color.
They are important stones to have within your collection for quite a few reasons. One major reason is that the quartz within them gives these crystals a strong ability to amplify energy.
Because these qualities are added to the energy of the quartz, each of the different colored stones have unique metaphysical attributes.
All the colors will support you to balance the male and female energies within you, regardless of your sex.
Leadership qualities are said to be enhanced by using any colors of Aventurine stones.
One application where you may use any of the varieties, is to meditate with them, as this may boost your ability to handle life changes.
As they contain quartz this will amplify the energy of the inclusion within them during meditation.