Goddess Durga symbolises the divine forces (positive energy) known as divine shakti (feminine energy/ power) that is used against the negative forces of evil and wickedness. She protects her devotees from evil powers and safeguards them. 

The Durga god was a woman riding a tiger with 8 arms that she used to shield and ward off evil.

The Durga Tigers Eye adjustable ring epitomises all that Durga stands for.