Years of development have led to a rigorous production process, which follows exact specifications and very high standards of quality control. Post production, all created moissanite undergoes stringent testing for quality and purity, along with numerous rounds of grading before being released for sale. The Charles & Colvard Certificate of Authenticity certifies that every gem is authentic Charles & Colvard Created Moissanite manufactured according to rigorous standards by highly skilled specialists.