A notch scratched into diamond rough to prepare it for cleaving is called?

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Study for the Diamond and Diamond Grading Exam. Enhance your skills with flashcards and multiple-choice questions, complete with explanations and insights. Get ready to excel in your diamond grading journey!

Multiple Choice

A notch scratched into diamond rough to prepare it for cleaving is called?

Explanation:
The notch scratched into rough diamond to prepare it for cleaving is called a kerf. Cutters create a shallow groove along a chosen cleavage plane so the stone will split predictably when pressure is applied. This notch deliberately weakens the crystal along that plane, guiding the fracture rather than allowing an uncontrolled break in random directions. Other terms don’t describe this preparatory groove: irradiation is a color-altering treatment, lamproite is a rock type that can host diamonds, and LDH isn’t related to the cleaving step.

The notch scratched into rough diamond to prepare it for cleaving is called a kerf. Cutters create a shallow groove along a chosen cleavage plane so the stone will split predictably when pressure is applied. This notch deliberately weakens the crystal along that plane, guiding the fracture rather than allowing an uncontrolled break in random directions. Other terms don’t describe this preparatory groove: irradiation is a color-altering treatment, lamproite is a rock type that can host diamonds, and LDH isn’t related to the cleaving step.

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