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Glittering Stones » Gemstone Facts » GIA Color Grade Scale
GIA Color Grade Scale
| Abbreviation |
Hue |
Abbreviation |
Hue |
| P |
Purple |
styG |
strongly yellowish-Green |
| rP |
reddish-Purple |
yG |
yellowish-Green |
| RP/PR |
Red-Purple or Purple-Red |
slyG |
slightly yellowish-Green |
| stpR |
strongly purplish-Red |
G |
Green |
| slpR |
slightly purplish-Red |
vslbG |
very slightly bluish-Green |
| R |
Red |
vstbG |
very strongly bluish-Green |
| oR |
orangy Red |
GB/BG |
Green-Blue or Blue-Green |
| RO/OR |
Red-Orange or Orange-Red |
vstgB |
very strongly greenish-Blue |
| rO |
reddish-Orange |
gB |
greenish-Blue |
| O |
Orange |
vslgB |
very slightly greenish-Blue |
| yO |
yellowish-Orange |
B |
Blue |
| oY |
orangy-Yellow |
vB |
violetish Blue |
| Y |
Yellow |
bV |
bluish Violet |
| gY |
greenish-Yellow |
V |
Violet |
| YG/GY |
Yellow-Green or Green-Yellow |
bP |
bluish Purple |
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