| Name | Locality | Region | Description | Type | Geologic environment | Age | Photo(s) | References |
| Blue lace agate | Chiefly Namibia | Africa | Pale blue and white lace agate | Vein agate | Volcanic rock (dolomite associated with dolerite) | Jurassic period | Blue lace agate from Ysterputz Mine, Namibia | |
| Botswana agate | Botswana | Africa | Typically 2.5–5 cm (0.98–1.97 in) in diameter, with contrasting bands of purple, pink, black, grey, and white | Nodular agate | Volcanic rock (Karoo Series, basalt) | Permian period | Botswana agate | |
| Malawi agate | Malawi | Africa | Typically bright red or orange with contrasting white bands, some are pink and blue | Nodular agate | Volcanic rock | Permian period | Malawi agate | |
| (Unnamed agate) | Bellingshausen Station, King George Island | Antarctica | White and clear bands | Nodular agate | | | Agate from King George Island, Antarctica | |
| Queensland agate | Queensland | Australia | Often green or yellow-green (colors that are rarely found in other regions), frequently level-banded | Nodular agate | Volcanic rock (basaltic lava flows) | Late Permian period | Queensland agate with level banding | |
| German agate | Near Idar-Oberstein, Germany | Europe | Often red or pink, sometimes other colors | Nodular agate | Volcanic rock | Permian period | German agate from Idar-Oberstein | |
| Scottish agate | Stonehaven to just south of Ayr, near Oban, and surrounding the Cheviot Hills, Scotland, United Kingdom | Europe | Various colored bands | Nodular agate | Volcanic rock (andesite) | Early Devonian period | Close-up of a Scottish agate from Ayrshire | |
| Small Isles agate | Islands off the west coast of Scotland, United Kingdom | Europe | Various colored bands | Nodular agate | Volcanic rock (basalt) | Tertiary period | [image needed] | |
| Potato stone (Pot stone) | Bristol and Somerset, England, United Kingdom | Europe | Irregularly-shaped, reddish, banded agate nodules, typically surrounding a hollow cavity lined with macroscopic quartz, but sometimes completely filled | Nodular agate | Sedimentary rock (dolomitic conglomerate and marl) | Triassic period | Potato stone from England | |
| Boley agate | Central Oklahoma, United States | North America | White fortification and eye banding with clasts of brecciated chert | Vein agate | Sedimentary rock (Boley conglomerate layer, Vamoosa formation) | Virgilian series | [image needed] | |
| Coldwater agate (Lake Michigan cloud agate) | Great Lakes Region, United States | North America | Banded lines of grey and white chalcedony | Nodular agate | Sedimentary rock (marine limestone and dolomite) | | [image needed] | |
| Crazy lace agate | Mexico | North America | Brightly colored lace agate, typically white and red, sometimes yellow and grey | Vein agate | Sedimentary rock | Late Cretaceous period | Crazy lace agate | |
| Dugway geode | Utah, United States | North America | Light grey to blue, often contain hollow cavities lined with drusy quartz | Nodular agate (thunder egg) | | | Dugway geode from Utah | |
| Fairburn agate | South Dakota and Nebraska, United States | North America | Red fortification banding | Nodular agate | Sedimentary rock (marine carbonate sediments) | Pennsylvanian period | Fairburn agate from western South Dakota | |
| Laguna agate | Ojo Laguna, Chihuahua, Mexico | North America | Vibrant bands in shades of red, orange, pink, or purple, often exhibit parallax or shadow banding, inclusions common | Nodular agate | Volcanic rock (andesite) | Tertiary period | Laguna agate | |
| Lake Superior agate | Near Lake Superior, United States and Canada | North America | Bands in shades of red, orange, yellow, brown, white, and grey, level banding and various structural features common | Nodular agate | Volcanic rock (basalt) | Late Precambrian | Rough Lake Superior agate from Keweenaw Peninsula, Michigan | |
| Lysite agate | Lysite Mountain, Fremont County, Wyoming, United States | North America | Colorful bands with plumes and moss | Vein agate | Sedimentary rock (marine origin) | | [image needed] | |
| Blue Bed (Pony Butte) thunder egg | Richardson Ranch (formerly Priday Ranch), northeast of Madras, Oregon, United States | North America | Blue and white banding with dark brown shell, frequently level-banded | Nodular agate (thunder egg) | Volcanic rock (John Day Formation, rhyolitic volcanic ash) | Miocene epoch | Blue Bed thunder egg from near Madras, Oregon | |
| Holley (Holly) blue agate | Near Holley, Oregon | North America | Lavender to blue | Nodular agate | | | Holley blue agate from Oregon | |
| Sweetwater agate | Near Sweetwater River, Wyoming | North America | Small moss agates with brown or black dendrites, fluorescent under UV light | Nodular agate | Sedimentary rock (sandstone) | Miocene epoch | [image needed] | |
| Turritella agate | Wyoming | North America | Brown fossil agate with the elongated spiral shells of an extinct freshwater snail (Elimia tenera) | Fossil agate | Sedimentary rock (Green River Formation) | Eocene epoch | Turritella agate (Elimia tenera) | |
| Brazilian agate | Rio Grande do Sul and other southeastern states, Brazil | South America | Often large, up to 0.9 m (3.0 ft) in diameter and over 120 kg (260 lb), commonly pale yellow, gray, or colorless (usually sold artificially dyed), are more colorful or contain structural features | Nodular agate | Volcanic rock (decomposed volcanic ash and basalt) | Late Permian period | Natural Brazilian agate Dyed Brazilian agate | |
| Condor agate | Mendoza, Argentina | South America | Bright red and yellow fortification banding, may contain mossy or sagenitic inclusions | Nodular agate | | | Condor agate | |
| Crater agate | Patagonia, Argentina | South America | Typically hollow, black with red bands near the center | Nodular agate | Volcanic rock (rhyolite) | Jurassic period | [image needed] | |
| Puma agate | Andes, Patagonia, Argentina | South America | Agatized coral | Fossil agate | Sedimentary rock (marine) | | [image needed] | |
