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Diamond Basic Information
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Girdle
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

Fluorescence
N, NO, NON, - No Fluorescence
F, FB, FT, FA, - Faint or Faint Blue Fluorescence
SL, SLB, SLT, - Slight Fluorescence
M, MO, ME, MD - Medium or Moderate Fluorescence
S, ST, STB, STG, - Strong Fluorescence
E, EX, EXB, EF, - Extreme Fluorescence

Culet
N, NO, NON, - No Culet
P, PO, PN, PNT, - Pointed
VS, VSM, VRSM, - Very Small
S, SM, SML, - Small
M, ME, MD, MM, - Medium
L, LA, LG, - Large
VL, VLG, VRLG, - Very Large
EL, EX, EXLG, - Extremely Large

Symmetry
EX or E - Excellent, Flawless at 10X power
VG or VGD - Very Good, Extremely difficult to locate under 10X power
GD, GO, G - Good, Very diffucult to see under 10X magnification
F, FR, FA - Fair, Noticable under 10X power
PR, PO, P - Poor, Easy to see under 10X / Visible to unaided eye
VP, VE, - Very Poor, Relatively easy to see with the unaided eye
EP - Extremely Poor, Obvious to see with unaided eye

Polish
EX or E - Excellent, Flawless at 10 power
VG or VGD - Very Good, Extremely difficult to locate under 10 power
GD, GO, G - Good, Very difficult to see under 10 power
F, FR, FA - Fair, Noticeable under 10 power
PR, PO, P - Poor, Easy to see under 10X / Visible to unaided eye
VP, VE, - Very Poor, Relatively easy to see with the unaided eye
EP - Extremely Poor, Obvious to see with unaided eye