The white howlite stone is believed to help teach patience, and overcome self criticism. It is also a very calming stone used to relieve stress of all kinds. It makes an excellent antidote to insomnia due to an overactive mind.
Zodiac - Gemini 
Element - Air

Lava stone was used by American Indians when entering battle for its qualities of strength and clarity. It’s believed to provide strength (physical and mental) when facing difficult situations.

Turquoise stone is known to strengthen the whole body, promote the absorption of nutrients, tissue regeneration, and circulation. It’s also known to protect from harmful environmental pollutants and poisons. It is believed to save the wearer from problems on a journey or adventure. It is also believed to destroy hatred and increase love. Turquoise is a purification stone.
Chakras - Heart Chakra, Throat Chakra, Third Eye Chakra 
Zodiac - Scorpio, Sagittarius, Aquarius, Pisces 
Element – Earth/Air/Fire