Delicate iolite / water sapphire necklace with small dark purple faceted beads. Metal clasp is rusted and could be replaced.  

As a healing stone, iolite (also known as water sapphire) is said to have a calming and clarifying effect.   
Mental clarity & focus: It is said to help strengthen memory, centre the mind and provide a clear head in cases of mental exhaustion or chaos. 
Patience & perseverance: The stone is said to support staying committed to long-term goals with discipline and perseverance and organising chaotic life circumstances. 
Inner peace: On an emotional level, iolite is said to help reduce stress, ease anxiety and provide greater balance and self-confidence. 
Physical benefits: Traditionally, it is often associated with relieving headaches, strengthening the nerves and positively supporting the metabolism.