Table 6: TFN set of criteria; each value in the criteria comparison (see Table 2) is changed to TFN referring to the TFN scale.

Specific Gravity ColorHardnessCuttingClarity
LMULMULMULMULMU

Specific Gravity11111,520,511,511,5211,52
Color0,50,666667111111,520,511,511,52
Hardness0,666667120,50,666667111111,5211,52
Cutting0,50,66666710,666667120,50,666667111111,52
Clarity0,50,66666710,50,66666710,50,66666710,50,6666671111