Jasper is an opaque variety of chalcedony, which is a microcrystalline variety of the mineral Quartz. Opaque means that neither light nor images pass through. Microcrystalline quartz in its pure form is semitransparent. When a small amount of impurities or foreign materials are added to microcrystalline quartz, the color changes and its ability to transmit light decreases. Jasper contains enough impurities and foreign material to make it opaque.

It often contains an abundance of impurities, and therefore some regard it as a rock instead of a mineral. Jasper is usually associated with brown, yellow, or reddish colors, but may be used to describe other opaque colors of Chalcedony such as dark or mottled green and orange. Some forms of Jasper are banded, and these banded Jaspers may appear similar to Agate, but unlike Agate they are opaque. When Jasper is dull and lacking interesting colors or patterns, it is not Jasper but rather Chert.

Jasper is an opaque rock of virtually any color stemming from the mineral content of the original sediments or ash. Patterns arise during the consolidation process forming flow and depositional patterns in the original silica rich sediment or volcanic ash. Hydrothermal circulation is generally thought to be required in the formation of jasper. The classification and naming of jasper varieties are attributed to various well-defined materials includes the geographic locality where it is found, sometimes quite restricted such as "Bruneau" (a canyon) and "Lahontan" (a lake), rivers and even individual mountains; many are fanciful, such as "forest fire" or "rainbow", while others are descriptive, such as "autumn" or "porcelain". A few are designated by the place of origin such as a brown Egyptian or red African jaspers.

Picture jaspers exhibit combinations of patterns such as banding from flow or depositional patterns, dendritic or color variations resulting in what appear to be scenes or images on a cut section. Diffusion from a center produces a distinctive orbicular appearance, i.e., leopard skin jasper, or linear banding from a fracture as seen in leisegang jasper. Healed, fragmented rock produces brecciated (broken) jasper.

While "picture jaspers" can be found all over the world, specific colors or patterns are unique to the geographic region from which they originate. For example Oregon’s Deschutes or Biggs jasper and Idaho's Bruneau jasper from the Bruneau River canyon are particularly fine examples. Other examples can be seen at Llanddwyn Island in Wales. A remarkable, pale, blue-green jasper, with patterns somewhat resembling those of malachite, occurs in a deposit at Ettutkan Mountain, Russia.

Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones
Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones Polished Deschutes Jasper from Elkins Gem Stones
Item # 46DESCJAS06200099

Polished Deschutes Jasper from Elkins Gem Stones

$179.00

Here's an excellent polished free form specimen of Deschutes Jasper that we obtained from Wally Marks of the Highway 50&95 rock shop in 1997. He obtained this directly from Hoot Elkins at Elkins Gem Stones in Prineville, Oregon in 1977 and this piece was in Wally's personal collection until he sold it to us. For those of you who do not know who Hoot Elkins was, the discovery of this picturesque Jasper is attributed to him sometime in the 1960's. This is a true classic specimen from a classic locale!

This specimen weighs 5.9 oz or 0.37 lbs (169g) and measures 3.5 x 2.2 x 1.39 inches (8.9 x 5.6 x 3.5cm)

End Cut Deschutes Jasper from Elkins Gem Stones
End Cut Deschutes Jasper from Elkins Gem Stones
End Cut Deschutes Jasper from Elkins Gem Stones
End Cut Deschutes Jasper from Elkins Gem Stones
End Cut Deschutes Jasper from Elkins Gem Stones
End Cut Deschutes Jasper from Elkins Gem Stones

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End Cut Deschutes Jasper from Elkins Gem Stones
End Cut Deschutes Jasper from Elkins Gem Stones

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End Cut Deschutes Jasper from Elkins Gem Stones
End Cut Deschutes Jasper from Elkins Gem Stones
End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones End Cut Deschutes Jasper from Elkins Gem Stones
Item # 47DESCJAS06200554

End Cut Deschutes Jasper from Elkins Gem Stones

$86.00

Here's an excellent end cut, NOT polished, specimen of Deschutes Jasper that we obtained from Wally Marks of the Highway 50&95 rock shop in 1997. He obtained this from Hoot Elkins daughter Judy at Elkins Gem Stones in Prineville, Oregon in 1995. This piece was an end cut of a specimen Wally was working on in his workshop. For those of you who do not know who Hoot Elkins was, the discovery of this picturesque Jasper is attributed to him sometime in the 1960's. (Hoot died in 1994) This is a true classic specimen from a classic locale! Elkins Gem Stones closed in 2012

This specimen weighs 8.6 oz or 0.54 lbs (245g) and measures 5 x 3.2 x 0.25 to 1 inch (127 x 83 x 6.38 to 25mm)

Biggs Jasper Slab from Oregon

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Biggs Jasper Slab from Oregon
Biggs Jasper Slab from Oregon
Biggs Jasper Slab from Oregon
Biggs Jasper Slab from Oregon
Biggs Jasper Slab from Oregon
Biggs Jasper Slab from Oregon
Biggs Jasper Slab from Oregon

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Biggs Jasper Slab from Oregon
Biggs Jasper Slab from Oregon
Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon Biggs Jasper Slab from Oregon
Item # 48BIGGJAS06200043

Biggs Jasper Slab from Oregon

$73.00

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Here's a very nice Biggs Jasper slab from Oregon. We procured this in Quartzsite in 2002 from a dealer from Oregon who told us this was Deschutes Jasper. After getting it home we discovered that the light colored center of this slab was too soft to be Deschutes, but is in fact Biggs Jasper. Deschutes and Biggs are very similar but Biggs jasper is a bit softer than Deschutes jasper. This is a very nice slab of Biggs jasper with tight formations. The darker areas are very solid and this piece will make many fine cabs. The light colored center section is softer as may be seen in the photos showing the extracted sections.

This specimen weighs 6.54 oz or 0.4 lbs (185g) and measures 6.4 x 3.6 x 0.25 inches (162 x 91 x 6.46mm)

Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil
Item # 49FANJAS06203942

Fancy Jasper Rough from Brazil

$49.85

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Here's a very nice Fancy Jasper rough specimen from Brazil. We procured this in 2005 from a Brazilian mineral dealer. It has nice 3 color banding with distinct shades in the red-orange and golden colors.

This specimen weighs 54.2 oz or 3.39 lbs (1.54kg) and measures 5.4 x 5.3 x 2.4 inches (13.8 x 13.4 x 6.2cm)

Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil
Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil Fancy Jasper Rough from Brazil
Item # 50FANJAS06208271

Fancy Jasper Rough from Brazil

$34.55

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Here's a very nice Fancy Jasper rough specimen from Brazil. We procured this in 2005 from a Brazilian mineral dealer. It has nice 3 color swirls with mixed shades in a dark green mix.

This specimen weighs 31.5 oz or 1.97 lbs (895g) and measures 4.3 x 4.1 x 2.5 inches (10.9 x 10.5 x 6.4cm)

Mushroom_Jasper_51_4_
Mushroom Jasper Rough from Arizona
Mushroom Jasper Rough from Arizona
Mushroom Jasper Rough from Arizona
Mushroom_Jasper_51_4_ Mushroom Jasper Rough from Arizona Mushroom Jasper Rough from Arizona Mushroom Jasper Rough from Arizona
Item # 51MRMJAS06205802

Mushroom Jasper Rough from Arizona

$41.69

Here's a cut and burnished face Mushroom Jasper rough specimen nodule from Northwest of Phoenix, Arizona. We procured this in 2007 from a mineral dealer in Quartzsite, Arizona. It has a very large area with mushroom like shapes surrounded by the traditional red band and the greenish surround.

This specimen weighs 29.9 oz or 1.87 lbs (848g) and measures 4.7 x 3 x 2.25 inches (12.1 x 7.7 x 5.7cm)

Mushroom Jasper Rough from Arizona
Mushroom Jasper Rough from Arizona
Mushroom Jasper Rough from Arizona
Mushroom Jasper Rough from Arizona
Mushroom Jasper Rough from Arizona
Mushroom Jasper Rough from Arizona
Mushroom Jasper Rough from Arizona Mushroom Jasper Rough from Arizona Mushroom Jasper Rough from Arizona Mushroom Jasper Rough from Arizona Mushroom Jasper Rough from Arizona Mushroom Jasper Rough from Arizona
Item # 52MRMJAS06206743

Mushroom Jasper Rough from Arizona

$69.52

Here's a Mushroom Jasper rough specimen from Northwest of Phoenix, Arizona. We procured this in 2007 from a mineral dealer in Quartzsite, Arizona. It has amazing mushroom like shapes surrounded by the traditional red band and the greenish surround. This specimen should make excellent slabs and cabochons.

This specimen weighs 49.8 oz or 3.12 lbs (1.41kg) and measures 5.7 x 4.1 x 2.9 inches (14.5 x 10.6 x 7.5cm)

Porcelain Jasper Rough from Mexico
Porcelain Jasper Rough from Mexico
Porcelain Jasper Rough from Mexico
Porcelain Jasper Rough from Mexico
Porcelain Jasper Rough from Mexico
Porcelain Jasper Rough from Mexico
Porcelain Jasper Rough from Mexico
Porcelain Jasper Rough from Mexico
Porcelain Jasper Rough from Mexico Porcelain Jasper Rough from Mexico Porcelain Jasper Rough from Mexico Porcelain Jasper Rough from Mexico Porcelain Jasper Rough from Mexico Porcelain Jasper Rough from Mexico Porcelain Jasper Rough from Mexico Porcelain Jasper Rough from Mexico
Item # 53PORCJAS06204312

Porcelain Jasper Rough from Mexico

$42.68

Here's an amazing old stock specimen of Porcelain Jasper from Mexico. We procured this in 2008 from a Mexican mineral dealer in Quartzsite, Arizona. It has amazing artistic shapes and colors. This specimen should make excellent slabs and cabochons.

This specimen weighs 38.5 oz or 2.4 lbs (1.09kg) and measures 6.1 x 4.4 x 2.7 inches (15.5 x 11.3 x 7cm)

Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon
Item # 54WHCJAS06200841

Wild Horse Canyon Jasper Rough from Oregon

$29.60

Here's a nice cut face Jasper rough specimen from Wild Horse Canyon in Oregon. We procured this in 2010 from a mineral dealer in Nevada. It has interesting color formations. This specimen will need to be stabilized due to its porous surfaces. It should then make excellent slabs and cabochons.

This specimen weighs 29.7 oz or 1.85 lbs (843g) and measures 3.6 x 3.3 x 2.5 inches (9.1 x 8.5 x 6.3cm)

Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon
Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon Wild Horse Canyon Jasper Rough from Oregon
Item # 55WHCJAS06203450

Wild Horse Canyon Jasper Rough from Oregon

$10.85

Here's a nice cut face Jasper rough specimen from Wild Horse Canyon in Oregon. We procured this in 2010 from a mineral dealer in Nevada. It has interesting color formations. This specimen will need to be stabilized due to its porous surfaces. It should then make excellent slabs and cabochons.

This specimen weighs 6.1 oz or 0.38 lbs (175g) and measures 3.4 x 1.9 x 1.2 inches (8.7 x 5 x 3cm)

Rain Forest Jasper from Australia
Rain Forest Jasper from Australia
Rain Forest Jasper from Australia
Rain Forest Jasper from Australia
Rain Forest Jasper from Australia
Rain Forest Jasper from Australia
Rain Forest Jasper from Australia Rain Forest Jasper from Australia Rain Forest Jasper from Australia Rain Forest Jasper from Australia Rain Forest Jasper from Australia Rain Forest Jasper from Australia
Item # 56RFJAS06205234

Rain Forest Jasper from Australia

$68.50

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This stone is actually a rhyolite and not a jasper. However, because everyone refers to it as Rainforest Jasper, we will continue doing that here as well. Rainforest Jasper is the green form of Rhyolite and comes from Western Australia. It has greens, browns, and yellows that are reminiscent of the darkness of a rainforest, with its filtered light through green leaves and the brown forest floor.

Rainforest Jasper is a kind of Rhyolitic lava that can be found in volcanic areas. During the solidification process, gas bubbles are trapped inside and are filled by siliceous material, such as Quartz Crystals, Jaspers, and other minerals. It’s common to see quartz patches in the stone. And depending where they originated from, Rainforest Jasper can also contain Nepholite and Feldspar. Rainforest Jasper is also known as Australian Rainforest Jasper, Rainforest Rhyolite, Spherulitic Rhyolite, Agatised Rhyolite, and Green Rhyolite.

This specimen has a cut and polished face. It has natural fractures as is common with this material.

This specimen weighs 51.6 oz or 3.2 lbs (1.46kg) and measures 6.1 x 3.7 x 3.4 inches (15.7 x 9.5 x 8.7cm)

Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar

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Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar Kambaba Jasper Rough from Madagascar
Item # 57KMBAJAS06200484

Kambaba Jasper Rough from Madagascar

$96.80

Here's an excellent quality Australian Rainforest Jasper rough specimen from Western Australia. We procured this in 2009 from a mineral dealer in Nevada. It has top grade orbicular formations in a beautiful matrix. This quality is very difficult to find.

This specimen weighs 112.5 oz or 7 lbs (3.189kg) and measures 6.8 x 4.5 x 3.7 inches (17.2 x 11.4 x 9.4cm)