Adjustable will fit most sizes. 
Avoid wearing in water. Fashion jewellery only. 
A stone of transformation, Labradorite is a useful companion through change, imparting strength and perseverance. It balances and protects the aura, raises consciousness and grounds spiritual energies. Excellent for strengthening intuition - promoting psychic abilities.
Zodiac- Sagittarius, Scorpio, Leo
Chakra- Third Eye, Crown