Macle is defined as

Macle is defined as

• A. A curved facet arrangement on a diamond
• B. A flat, triangular twinned diamond crystal.
• C. A hollow inclusion pattern
• D. A type of diamond cut with four edges

Answer: (B)

Macle describes a crystal habit produced by twinning in diamonds: a flat, triangular twinned diamond crystal. It forms when two or more diamond growth domains share a common twinning plane, creating a mirror-like pair that together presents a flat, triangular shape in rough form. This is a natural crystal characteristic, not a cut style or an inclusion pattern, and it isn’t about curved facets or a four-edged cut. So the term identifies a twin crystal configuration with a flat, triangular appearance, rather than a specific cut, inclusion, or curved facet arrangement.

Macle describes a crystal habit produced by twinning in diamonds: a flat, triangular twinned diamond crystal. It forms when two or more diamond growth domains share a common twinning plane, creating a mirror-like pair that together presents a flat, triangular shape in rough form. This is a natural crystal characteristic, not a cut style or an inclusion pattern, and it isn’t about curved facets or a four-edged cut. So the term identifies a twin crystal configuration with a flat, triangular appearance, rather than a specific cut, inclusion, or curved facet arrangement.