Tree Of life Chakra Stones & Lava Rock bracelet. Lava Rock is known for being a grounding stone, one that can balance the emotions and bring about calmness and strength. It's believed to help keep tempers in check and also help its wearer to work through problems in a logical way. ... Lava Rock is known for helping to promote fertility. Chakra stones and crystals can be placed on your body to purify and balance the chakras, releasing all the negativity and resulting to emotional release. They can heal the body and release the life force energy. They can transform the negative energies into positive energies and lead to good health. 8mm beads, standard size.