Achates Gemstones & Minerals

The following is a list of Achates gems and minerals listed in our database. Click the pictures to get full data, click the X to remove the gem from the list.

Fire Agate

Fire Agate: Fire Agate is a term applied to much of the variety of chalcedony that occurs as botryoidal, consisting of crystals of minute platy inclusion of an iron mineral goethite or limonite minerals over the layers of chalcedony, producing a vivid rainbow containing every color in the spectrum, an iridescent, fire-like appearance, with careful polishing away of the brown outside layers. When polished, it (read full)