Which term describes the distortion created during growth when one part of the lattice is offset relative to the rest?

Which term describes the distortion created during growth when one part of the lattice is offset relative to the rest?

• A. Girdle thickness percentage
• B. Glassie
• C. Glide plane
• D. Grease belt

Answer: (C)

A glide plane describes a planar distortion in a crystal where part of the lattice is offset relative to the rest as growth proceeds. In a glide operation, you reflect the structure across a plane and then translate parallel to that plane, producing a shifted arrangement between the two regions. This offset across a plane is exactly the kind of distortion described. The other terms don’t describe this planar offset mechanism: girdle thickness percentage relates to how wide the diamond’s girdle is, Glassie isn’t a crystallography term, and grease belt isn’t a valid term in this context.

A glide plane describes a planar distortion in a crystal where part of the lattice is offset relative to the rest as growth proceeds. In a glide operation, you reflect the structure across a plane and then translate parallel to that plane, producing a shifted arrangement between the two regions. This offset across a plane is exactly the kind of distortion described. The other terms don’t describe this planar offset mechanism: girdle thickness percentage relates to how wide the diamond’s girdle is, Glassie isn’t a crystallography term, and grease belt isn’t a valid term in this context.