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*CABOCHON Suites or Sets
Apache Gold Cabochons
Arizona Pietersite Cabochons
Australian Moss Agate
Azurite Shattuckite
Azurite-Malachite Cabochons
Blue Chalcedony Cabochons
Blue Lace Agate Cabochons
Brazilian Piranha Agate
Bruneau Jasper Cabochons
Bubble Blue Chalcedony
Cacoxenite Amethyst
Candy Opal Cabochons
Carrasite Jasper Cabochons
Cave Creek Jasper Cabochons
Cherry Creek Jasper
Chevron Amethyst Cabochons
Chinese Writing Rock
Cobalto Calcite (Pink Drusy)
Copper Rose Cabochons
Coquina Jasper Cabochons
Cotham Marble Cabochons
Covellite Cabochons (fat)
Covellite Cabochons (thin)
Coyamito Agate Cabochons
Crazy Lace Agate Cabochons
Deschutes Jasper Cabochons
Dinosaur Bone Cabochons
Drusy Agate Cabochons (Druse)
Drusy Chrysocolla Cabochons
Flame Agate Cabochons
Fluorite Cabochons
Fossil Coral Cabochons
Graveyard Point Agate
Howlite Cabochons
K2 Cabochons
Kabamba Jasper Cabochons
Kyanite Cabochons
Labradorite Cabochons
Laguna Agate Cabochons
Magnetite & Pyrite
Mahogany Obsidian
Maw Sit Sit Jade Cabochons
Medicine Bow Agate
Mexican Fire Opal
Mohawkite Cabochons
Montana Agate Cabochons
Mookaite Jasper Cabochons
Morgan Hill Poppy Jasper
Morrisonite Jasper Cabochons
Native Copper Cabochons
Nipomo Agate Cabochons
Noreena Jasper Cabochons
Ocean Jasper Cabochons
Other Specialty Cabochons
Owyhee Jasper Cabochons
Petrified Palm Wood (Indonesia)
Petrified Palm Wood (Louisiana)
Petrified Sycamore Wood
Polish Flint Cabochons
Prehnite Cabochons
Psilomelane Cabochons
Rainbow Obsidian Hearts
Red Agate Pseudomorph
Rhodochrosite (Gemmy)
Rhodochrosite Cabochons
Rhodonite Cabochons
Ricolite Cabochons
Royal Imperial Jasper
Rutilated Quartz Cabochons
Sagenitic Agate Cabochons
Serpentine Cabochons
Sonora Sunset Cabochons (Chrysocolla Cuprite)
Spectrolite Cabochons
Spiderweb Obsidian
Stinking Water Plume
Tiffany Stone Cabochons
Tigereye Cabochons
Turquoise Cabochons
Tuxedo Agate Cabochons
Uvarovite Garnet Cabochons
Wave Dolomite Cabochons
Web Serpentine Cabochons
Willow Creek Jasper

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Chalcedonies - Agates and Jaspers

Coyamito Agate Poppy Jasper Royal Imperial Jasper Blue Chalcedony Laguna Agate Piranha Agate

Quartz is one of the most abundant minerals on earth. It is found on every continent, and every country. Chalcedony (kal SED' nee) is any form of cryptocrystalline quartz , where the crystals are too small to be seen without high magnification. It too is found in every country. Chalcedony forms in rounded crusts, rinds or stalactites in both volcanic and sedimentary rocks. The name can only be traced to the early sixteenth century and probably comes from "Chalcedon", an ancient port city on the Sea of Marmara in modern-day Turkey. Chalcedonies usually have a waxy luster and a hardness of 6.5 to 7. Chalcedony stones are tough gems, good for all jewelry uses and require no special care in wearing or cleaning.

In the rock world usually only the translucent or transparent, single color types are sold under the name "chalcedony". Blue Chalcedony is probably the best known, but other colors are white, purple, yellow, and orange. Chrysophrase is a lovely apple green color and the blood red variety is simply known by the name Carnelian. There is an extremely rare pink to raspberry colored stone from South Africa known as Bustamite. The various types differ in color due to metallic impurities, such as iron, nickel, copper, and titanium present during crystallization.

The rest of the stones in the chalcedony family are sold under individual variety names (Flint, Sard...), or as jaspers or agates. While the definitions overlap, Jasper usually refers to an opaque stone (no light comes through), with a solid color or an irregular display of colors caused by various mineral impurities. The name Jasper is derived from the Greek word that means “spotted stone”. Agate is defined by its translucency (ability to see light through it), and by its clearly defined pattern or banding (stripes) of multiple colors. The name Agate is derived from the Sicilian river, Achates, where the material was first found in quantity. Sometimes the distinction is blurred. Fire Agate is neither translucent, nor banded. And sometimes people just refer to a stone as a Jasp-Agate.

Jasper stones and Agates stones are found all over the world, with certain colors or patterns unique to particular localities. They are generally named after their locality (Montana Agate, Botswana Agate, Deschutes Jasper), or their appearance (Dalmation Jasper-white with black spots, Poppy Jasper-yellow spots or "poppies", Crazy Lace Agate). All types of jasper gems and agate gems take an excellent polish, are trouble free to care for, and hardy enough for all jewelry uses.

Petrified Wood and Dinosaur Bone are chalcedony pseudomorphs, the replacement of one mineral (wood or bone) for another (chalcedony) without changing the original mineral's external appearance-even the most minute details of the wood or bone are preserved! In the Petrified Forest in Arizona, there are remains of an entire ancient forest that was transformed into chalcedony. Some logs as long as 213 feet have been found!

Most Chalcedony varieties are rich with history and lore. Agate was one of the first known minerals, and legends say the wearer of a agate would be agreeable and persuasive, and wearing an agate would assure him victory. The Sumerians, the earliest inhabitants of Mesopotamia, are believed to be the first user of agates in seals, beads, and jewelry. In ancient times agate was often carved into bowls. In Vienna there is a bowl measuring 28.5 inches across that was believed to be carried to Europe by the Crusaders. Click here to learn more about the history and legends of gemstones!

See the variety of Agates in my store!

See the variety of Jaspers in my store!

Barlow's Gems


Cutting Custom Cabochons | Chalcedony: Agates and Jaspers  | Metaphysical Properties
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