Chrysocholla, copper and sterling are a beautiful combination.  
The circle represents growth and the ever-rolling circle of life.
 It also symbolizes the truth that your journey never really ends. You should always strive for betterment. Even after you feel like you’ve accomplished everything you can, there’s always room to grow.
  The circle is the ultimate symbol of universal continuity. Circles can also symbolize evolution and the process of transformation.
 Chrysocolla is a copper stone, ranging from light green to deep blue, and is often found in association with Malachite and Azurite. Some chrysocolla contains Cuprite. It is favored as a stone of prosperity and business astuteness, reacting upon the analytical and intuitive abilities. 
Chrysocolla was first mentioned in 315 BC by Theophastus but was revived and reported again in 1808 by A.J.M. Brochant.