Thunderegg Sets

Find whole thundereggs cut in half and polished to a fine shine.

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THUNDEREGG : OREGON'S STATE ROCK

bulletWhat is a Thunderegg ?   Thundereggs are spherical masses of rock that range in size from less than an inch to four feet in diameter . Most are about the size of a baseball . They have a knobby rind of drab , siliceous rock and a cavity filled with agate . From the out side they appear nondescript , but when sawed open and polished they may reveal the most exquisite and colorful designs ranging from five-pointed stars to miniature gardens .
bulletHistory of The Name :   The Warm Springs Indians have been given credit for "long ago" originating the name . As the legend goes, ". . . the two adjacent snow capped peaks - - Mt. Hood and Mt. Jefferson - - would at times become angry with one another . During these disputes, accompanied with thunder, Mt. hood and Mt. Jefferson would hurl these spherical masses of rock at each other . Stray shots would land over in the Indian reservation, hence the Indian name of ' thunder eggs '."
bulletOrigin of Thundereggs :   Thundereggs are only found in areas of previous volcanic activity . As silicic lavas poured out on the ground, the gasses made it frothy and bubbly . The lava cooled and over a period of millions of years, became buried . Water, which contains many minerals including silica, penetrated the gas pockets through a crack in the nodule. As water slowly dissipated, the solution deposited agate ( chalcedong SiO2 )

 
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Look at our Thunderegg setsWelcome to the Thunderegg sets part of the store. Here we will be offering whole Thundereggs sawn in half and polished.

bulletAll of our products are unique collectables and will be sold on a first come first serve basis, and will be removed from inventory.
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Please refer to each item for individual descriptions and dimensions.

Please click on Thunderegg Photographs to enlarge.

Thunderegg Half of a Set TES - 121 Price: $30.00

A polished Calico Thunderegg from McDermitt, Oregon. The agate center cavity is outlined in agate. The cavity has billowy white and purplish drusy quartz crystals covering the whole interior. The left end of cavity has a few red crystals. The other half is listed seperately. Size: 3 3/4"h x 5"w x 1 1/2" deep at highest, widest, & thickest parts. Weight: 1 lbs. 3 oz. total for this half. 32009

 

 

 

Thunderegg Half of a Set TES - 121 Price: $30.00

A closeup.

Thunderegg Half of a Set TES - 122 Price: $25.00

A polished Calico Thunderegg from McDermitt, Oregon. The agate center cavity is outlined in agate. The cavity has billowy white and purplish drusy quartz crystals covering the whole interior. The other half is listed seperately. Size: 3 5/8"h x 4 3/4"w x 1 1/4" deep at highest, widest, & thickest parts. Weight: 1 lb. for this half 32009

 

 

 

 

Thunderegg Half of a Set TES - 122 Price: $25.00

A closeup.

Thunderegg Half of a Set TES - 123 Price: $25.00

Calico Thunderegg: A beautiful example. The agate center has crystal outlining it. There is orange moss, making a nice show. The other half is listed seperately. Size: 2 3/4"h x 3 1/8"w x 1 5/8" deep at highest, widest, & thickest parts. Weight: 10 oz. for this half. 32009

Thunderegg Half of a Set TES - 123 Price: $25.00

A closeup.

Thunderegg Half of a Set TES - 124 Price: $25.00

Calico Thunderegg: A beautiful example from Mc Dermitt, Oregon. The agate center has crystal outlining it, with orange coloring and orange moss. The other half is listed seperately. Size: 3"h x 3"w x 1 3/8" deep at highest, widest, & thickest parts. Weight: 10 oz. for this half. 32009

Thunderegg Half of a Set TES - 124 Price: $25.00

A closeup.

Thunderegg Half of a Set TES - 127 Price: $30.00

Ochoco Thunderegg from east of Prineville, Oregon. There are twenty different beds in the Ochoco Mountain area. This is from one of them. The agate center has a beautiful ocean scene with green moss agate. The water level lines make the ocean waves and the sky is fortification agate. The moss makes a fine frame. Size: 4"H x 4"W x 2 1/8 "D. Measures taken at the highest, widest, & deepest parts. Weight is 1lb. 9ozs.

Thunderegg Half of a Set TES - 127 Price: $30.00

A closeup showing the moss.

Thunderegg Half of a Set TES - 128 Price: $30.00

Ochoco Thunderegg from east of Prineville, Oregon. There are twenty different beds in the Ochoco Mountain area. This is from one of them. The agate center has a beautiful ocean scene with green moss agate. The water level lines make the ocean waves and the sky is fortification agate. The moss makes a fine frame. Size: 4 1/2"H x 4 1/4"W x 2 1/8 "D. Measures taken at the highest, widest, & deepest parts. Weight is 2lbs.

 

Thunderegg Half of a Set TES - 128 Price: $30.00

A closeup view of the moss.

Thunderegg Half of a Set TES - 129 Price: $10.00

Calico Thundereggs from east of McDermitt, Oregon. This is a cluster of seven eggs bonded together. The agate centers are a gray blue with a white crystal pocket. The matrix has flecks of metalic. The matrix is colorful in it's self. Size: 2 1/4"H x 2 3/4"W x 1 5/8 "D. Measures taken at the highest, widest, & deepest parts. Weight is 6 oz.

 

 

Thunderegg Half of a Set TES - 129 Price: $10.00

Another view.

Thunderegg Half of a Set TES - 130 Price: $10.00

Calico Thundereggs from east of McDermitt, Oregon. This is a cluster of six eggs bonded together. The agate centers are a gray blue. I took the picture this way as it looks like some type of serpent walking to me. The matrix has flecks of metalic and is colorful in it's self. Size: 2 5/8"H x 2 1/2'W x 2 1/4 "D. Measures taken at the highest, widest, & deepest parts. Weight is 6 oz.

Thunderegg Half of a Set TES - 130 Price: $10.00

Another view.

GEODE SET TES-131a Price: $16.00 pair

An interesting double polished geode pair from Rabbit Springs, Idaho. Not much for color but it really comes alive when under fluorescent light. It becomes bright green bordering the hollow centers. The centers are a soft red color. More photos follow. Size: 3 1/4" tall x 4 1/2" wide x 1 1/2" deep. Weight: 11 oz. for this half.

GEODE SET TES-131a Photo #2

Another view of geode 131a.

GEODE SET TES-131a Photo #3

Another view of TES-131a.

GEODE SET TES-131a Photo #4

Another view.

GEODE SET TES-131a Photo #5

A view under fluorescent light. The light shows only part of double geode.

GEODE SET TES-131a Photo #6

The back of the double chalcedony geode.

GEODE SET TES-131b Price $16.00 pair

An interesting double polished geode pair from Rabbit Springs, Idaho. Not much for color but it really comes alive when viewed under fluorescent light. The light shows only part of double geode. It becomes bright green bordering the hollow centers. The centers are a soft red color. More photos follow. Size: 3 1/4" tall x 4 1/2" wide x 1 1/2" deep. Weight: 10 oz. for this half.

GEODE SET TES-131b Photo #2

What a difference with natural light.

GEODE SET TES-131b Photo #3

A nice left side closeup.

GEODE SET TES-131b Photo #4

A nice right side closeup.

GEODE SET TES-131b Photo #5

Set TES-131a & set TES-131b match.

Thunderegg SET TES-133a, Price $18.00 pair

A polished half of a Succor Creek thunderegg pair from Oregon. The agate center shows water level lines looking like water with a storm brewing above. You might see something different. More photos follow. Size: 3 1/4" tall x 3 1/2" wide x 7/8" deep. Weight: 9 oz. for this half.

 

Thunderegg SET TES-133a, Photo#2

A closeup photo.

Thunderegg SET TES-133a, Photo #3

This shows the back.

Thunderegg SET TES-137a, Price $10.00 set.

A polished half of a Richardson Ranch pair, from Oregon. The agate center shows a framed scene of water level lines and cloudes at dusk. You might see something different. More photos follow. Size: 2" tall x 2 3/8" wide x 1" deep. Weight: 4 oz. for this half.

 

 

 

Thunderegg SET TES-137a, Photo #2

A closeup of the scene by nature.

Thunderegg SET TES-137a, Photo #3

A look at the back. Hard to believe the beauty inside.

Thunderegg SET TES-137b, Price $10.00 set

A polished half of a Richardson Ranch pair, from Oregon. The agate center shows a framed scene of water level lines and cloudes at dusk. You might see something different. More photos follow. Size: 1 7/8" tall x 2 1/2" wide x 7/8" deep. Weight: 3 oz. for this half.

 

 

 

 

Thunderegg SET TES-137b, Photo#2

A closeup.

Thunderegg SET TES-137b, Photo #3

The back.

Please click on Thunderegg Photographs to enlarge.

 

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