|
Glittering Stones » Gemstone Facts
Gemstone Facts
| 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 |
GIA Tone Scale
| 0 |
1 |
2 |
3 |
4 |
| Colorless or White |
Extremely Light |
Very Light |
Light |
Medium-Light |
GIA Saturation Scale
| 1 |
2 |
3 |
4 |
5 |
6 |
| Brownish or Grayish |
slightly Brownish or slightly Grayish |
very slightly Brownish or very slightly Grayish |
Moderately Strong |
Strong |
Vivid |
| Color |
GIA |
CIBJO |
| Colorless |
D |
Exceptional white+ |
| E |
Exceptional white |
| F |
Rare white+ |
| Near Colorless |
G |
Rare white |
| H |
White |
| I |
Very slightly tinted white |
| J |
Slightly tinted white |
Type I Clarity Scale
| Exceptional |
Very Good |
Good |
Fair |
Poor |
| VVS |
VS |
SI |
I1... I2 |
I3 |
| Very Very Slightly Included |
Very Slightly Included |
Slightly Included |
Included |
Excessively Included |
MOH's
Hardness |
Mineral used for comparison |
Simple Hardness |
Cutting Hardness
(A. Rosiwal) |
| 10 |
Diamond |
|
140,000.00 |
| 9 |
Ruby, Sapphire, Alexandrite, Chrysoberyl |
|
1,000.00 |
| 8 |
Aquamarine, Emerald, Morganite, Spinel, Topaz |
|
175.00 |
| 7 |
Amethyst, Citrine, Garnet, Iolite, Kunzite, Peridot, Tanzanite, Tourmaline, Zircon |
Scratches window glass |
120.00 |
 |
| Brilliant Full Cut |
Eight Cut |
Rose |
Half Dutch Rose |
|
|
|
