Black Tourmaline- 

Tourmaline is helpful to use in balancing yin and yang energies, such as the feminine and masculine within ourselves. One of the most common uses for this crystal in feng shui is energetic protection. Tourmaline helps to create a shield around a person or room to prevent negative or unwelcome energies from entering.

lapis- 

Lapis Lazuli has many healing properties. This pretty indigo and gold gemstone is known for cleansing the throat and third eye chakras and can be used to ward off psychic attacks. As a stone geared towards wisdom and communication, Lapis Lazuli can also help connect you to clarity, integrity, and intuition.

Amethyst-