Which term represents Indented Natural, a portion of the rough's original surface that dips below the polished diamond's surface?

Which term represents Indented Natural, a portion of the rough's original surface that dips below the polished diamond's surface?

• A. Industrial rough
• B. IndN
• C. IntGr
• D. Igneous

Answer: (B)

Indented Natural is a surface feature on rough diamonds. It describes a portion of the rough's original surface that dips below the polished diamond's surface, and it’s commonly abbreviated as IndN. This label helps cutters understand where the rough’s plane curves inward, which matters for planning how to facet the stone. Recognizing an Indented Natural early guides decisions about weight retention and finish, since indented areas can influence how the final gem will look and how much material can be kept. The other terms refer to different concepts entirely—industrial rough is a rough category for industrial use, internal graining describes internal lines, and igneous is a rock type—so none of them describe this indentation feature or its standard shorthand.

Indented Natural is a surface feature on rough diamonds. It describes a portion of the rough's original surface that dips below the polished diamond's surface, and it’s commonly abbreviated as IndN. This label helps cutters understand where the rough’s plane curves inward, which matters for planning how to facet the stone. Recognizing an Indented Natural early guides decisions about weight retention and finish, since indented areas can influence how the final gem will look and how much material can be kept. The other terms refer to different concepts entirely—industrial rough is a rough category for industrial use, internal graining describes internal lines, and igneous is a rock type—so none of them describe this indentation feature or its standard shorthand.