They measure from 5 mm by 3mm to 8.5mm by 6mm.  9 cabochon.  Simply wonderful. 

Sapphire blue Kyanite cabochon.  A superb set of specimen of this stunning mineral. 

Kyanite is rare in gemmoligical terms in that it has a wide variation in hardness in the same crystal face. The hardness of kyanite is approximately 4.5 when scratched parallel to the long axis of the crystal and approximately 6.5 when scratched perpendicular to or across the long axis. 

Healing Properties of Kyanite:  Kyanite is an excellent stone for meditation and attunement.  It will not retain negative vibrations or energy, therefore never requiring clearing.  Kyanite aligns all chakras and subtle bodies instantly.  It provides balance of yin-yang energy and dispels blockages, moving energy gently through the physical body.  Kyanite brings tranquility.  It encourages psychic abilities and communication on all levels.  It drives away anger and stress and helps to provide logical thought.  Kyanite encourages perserverance of activities and situations which would normally reduce one’s strength.  It can help when connecting to your spirit guides.  Kyanite induces dream recall and can promote healing dreams.

Kyanite treats the urogenital system, adrenal glands and parathyroid glands.  It aids in disorders of the throat, brain and muscular system.  It helps to heal infections and lower blood pressure.  Kyanite is a natural pain reliever.

Blue Kyanite in particular, opens the throat chakra, encouraging communication and self-expression.  It  helps us speak the truth.  Useful for public speakers and performers, because it strengthens the voice and heals the throat and larynx.