Silica is made from quartz or flint and is the main constituent of rocks.

Silica types lack physical and mental stamina. It is often used for people who lack grit either physically or emotionally. They are tenacious and stubborn types who despite appearing fragile, when engrossed in something are highly obsessive and will overwork to the point of exhaustion.

Criticism hurts them as they feel they are unable to stick up for themselves. They are very insecure and do not expect to succeed, hence, they are inflexible and hesitant about undertaking new tasks. They have a fear of failure in business.

Physically they are prone to hardening of the glands, cracked skin, nail deformities, offensive foot sweats and feel the cold. Silica types are thin and small boned with fine hair. They are prone to cracked lips and recurrent infections.

Silica is mainly used for under-nourishment, colds, ear infections, catarrh, skin or bone complaints, stress and overwork.