Which term refers to a diamond's table size expressed as a percentage of its average girdle diameter?

Which term refers to a diamond's table size expressed as a percentage of its average girdle diameter?

• A. Synthetic diamond
• B. Table gauge
• C. Tang
• D. Table percentage

Answer: (D)

The concept being tested is how large the diamond’s flat top is relative to its overall width. This proportion is called the table percentage. It’s found by dividing the table’s width by the average girdle diameter and multiplying by 100. The table is the wide, flat facet on the top of the diamond, and the average girdle diameter is the stone’s width measured across the girdle. The table percentage directly affects how light travels inside the diamond and how large the finish appears from the top, influencing brilliance and overall appearance. The other terms don’t describe this proportion: synthetic diamond refers to origin, table gauge isn’t the standard term for this measurement, and tang isn’t used to denote table size.

The concept being tested is how large the diamond’s flat top is relative to its overall width. This proportion is called the table percentage. It’s found by dividing the table’s width by the average girdle diameter and multiplying by 100. The table is the wide, flat facet on the top of the diamond, and the average girdle diameter is the stone’s width measured across the girdle. The table percentage directly affects how light travels inside the diamond and how large the finish appears from the top, influencing brilliance and overall appearance. The other terms don’t describe this proportion: synthetic diamond refers to origin, table gauge isn’t the standard term for this measurement, and tang isn’t used to denote table size.