Highly lustrous, sharp, midnight blue crystals of Azurite from this world famous and historic copper mine, now long defunct. The tabular crystals have excellent form, and the largest is 1.8 cm end to end. Excellent blue fire with the right light make sit stand out. This is a very rare habit, and quality, for Chessy! Ex. Gene Meieran collection this is a near-floater cluster with only a small contact in back.