“Blue” by Holly Williams is licensed under CC By 2.0
Translucent Blue Agate Other, Dyed
"Blue" by Holly Williams is licensed under CC By 2.0
Article: Common Sense Gemstone Grading: An Alternative System
Credit: Holly Williams
| Gemstone | Quartz, Chalcedony, Agate |
| Treatments | Dyeing |
| Natural or man made | Natural |
| Gem State | Other |
| Color | Blue |
| Transparency | Translucent |