Aventurine: Green Aventurine. These Tumbled Green Aventurine Crystals are approximately 5/8 to 1 inch long. Used for opening the Heart Chakra and is often used in religious ceremonies. Green Aventurine is a great crystal for calming your mind, body and spirit. Green Aventurine unblocks energy flow to and from the Heart Chakra allowing your physical, emotional, and spiritual needs to be realized. Green Aventurine helps you to release yourself from attachments. Green Aventurine Helps to balance the flow of emotions that drive your conscious self. By giving and receiving love equally we can find peace in our soul.