A diamond’s girdle refers to the outer edge of any diamond, and may be faceted, though a faceted girdle doesn’t improve the diamond’s grade.
Diamond Girdle thickness is abbreviated as follows:
EXTN, ET, XT, EXN = Extremely Thin
VTN, VT, VETN = Very Thin
T, TN, TH = Thin
M, ME, MD = Medium
STK, ST, SLTK, SLTH = Slightly Thick
T, TK, TH = Thick
VTK, VTH, VETK, VET = Very Thick
ET, EXTK, XT, XTK = Extremely Thick
F, FA, FAC = Faceted
S, SM = Smooth
P, PO = Polished
