Agate – Natural, Other, Blue
Blue agate is almost certainly dyed. Image by Robert Ramsay from Pixabay.
Article: Common Gemstone Treatments Cheat Sheet
Credit: Pixabay
| Gemstone | Quartz, Chalcedony, Agate |
| Treatments | Dyeing |
| Natural or man made | Natural |
| Gem State | Other |
| Color | Blue |
| Transparency | Translucent |