They cut glass, being virtually identical to diamond on the Mohs (hardness) scale. Another type of bracelets that are becoming popular are sex bracelets. Ankle bracelets have been and are used in courts for prisoners.
Diamond Certificate
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality Good cut diamonds reflects most light that enters the diamond, but not as must as a premium cuts. They are less expensive than the premium-cut. Roughly 25% of diamonds are good-cut based on cut quality. This grade represents an excellent balance between quality and price.
Color Color grade I is in the middle of the near colorless category. Typically a trained professional will be able to discern the presence of color. Some people prefer warmer colors like I. When I color diamond is set in yellow gold jewelry used with yellow gold bezel, the diamond will appear as gorgeous as any of the higher graded stones.
Clarity VS1 diamonds have very small inclusions. Usually an experienced grader does not find any internal faults, but does not have great difficulties to see the inclusions when he moves the diamond a little from side to side. Typical inclusions of this group are small, light clouds or small light cracks on the girdle.