These rather special  Lapis lazuli tumbled stones

are Medium size

Lapis lazuli is a Solid, medium to dark blue. Contains gold pyrite and calcite infusions.

In meditation, opens Brow Chakra giving higher guidance, intuition, and connection to higher self, overview, and decisions for good of all. Organizes and quiets the mind. Also Opens Throat and Thyroid Chakra. Lapis Lazuli gives Self-expression, writing, creativity, dream insight. Helps with Anxiety, restlessness, insomnia, autism, shyness, nervous system, MS, speech, hearing, pituitary, DNA, lymph, inflammation, pain (especially head), and gives protection.