Although Cubic Zirconia is 8-8.5 on the Moh's scale of Hardness, your ring will crack or break if dropped or hit on a hard surface.  We recommend returning  your ring to its jewelry pouch or another soft, protected surface when it's not being worn.  Use warm water and mild dish soap or window spray  for cleaning; dry with soft cloth. If you have more detailed questions about cleaning and care please contact us at info@czernity.com