What term denotes a diamond orientation where the table is aligned with a cubic face?

What term denotes a diamond orientation where the table is aligned with a cubic face?

• A. Finish
• B. Fire
• C. Four-point diamond
• D. Foilback

Answer: (C)

Aligning the table with a crystal plane that corresponds to a cubic face leverages the diamond’s cubic lattice symmetry. When the table sits above that cube-facing plane, the cut inherits fourfold symmetry about the table, which is why this orientation is called a four-point diamond. This orientation influences how the pavilion facets meet around the table and can affect how light travels through the stone and how its facets interact with the crystal structure. Other terms describe surface polish (finish), light dispersion (fire), or backing style (foilback), not the orientation relative to the crystal lattice.

Aligning the table with a crystal plane that corresponds to a cubic face leverages the diamond’s cubic lattice symmetry. When the table sits above that cube-facing plane, the cut inherits fourfold symmetry about the table, which is why this orientation is called a four-point diamond. This orientation influences how the pavilion facets meet around the table and can affect how light travels through the stone and how its facets interact with the crystal structure. Other terms describe surface polish (finish), light dispersion (fire), or backing style (foilback), not the orientation relative to the crystal lattice.