Which term denotes a polishing technique where the diamond is rotated to align the softest direction facing the polishing wheel?

Which term denotes a polishing technique where the diamond is rotated to align the softest direction facing the polishing wheel?

• A. Three-point diamond
• B. Twisting
• C. Twinned crystal
• D. Unit cell

Answer: (B)

Twisting is the polishing technique where the diamond is rotated so its softest crystallographic direction faces the polishing wheel. Diamonds are extremely hard, but different directions respond differently to abrasion. The softest direction corresponds to the crystal planes that polish most easily. By twisting, the polisher aligns the stone so the wheel works with that natural weakness, leading to more uniform removal and a smoother, defect-free surface. Other terms describe crystal structure or defects rather than a polishing action. A three-point diamond doesn’t refer to a polishing method, a twinned crystal describes a crystal with a specific structural defect, and a unit cell is the smallest repeating building block of the crystal lattice.

Twisting is the polishing technique where the diamond is rotated so its softest crystallographic direction faces the polishing wheel. Diamonds are extremely hard, but different directions respond differently to abrasion. The softest direction corresponds to the crystal planes that polish most easily. By twisting, the polisher aligns the stone so the wheel works with that natural weakness, leading to more uniform removal and a smoother, defect-free surface.

Other terms describe crystal structure or defects rather than a polishing action. A three-point diamond doesn’t refer to a polishing method, a twinned crystal describes a crystal with a specific structural defect, and a unit cell is the smallest repeating building block of the crystal lattice.