Black Moonstone

Cancer Birthstone
Root, sacral, third eye, and crown chakras; Strengthening intuition and protects the user from negative energies. Helps us connect to Mother Earth, helping us to feel more universally connected and grounded. A stone of new beginnings and renewal, use black moonstone during the new moon to further your manifestations/intention setting during the new moon phase! 
It is also said to help in removing fears behind jealousy and possessiveness.