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.

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Please click on Thunderegg Photographs to enlarge.

Thunderegg Set TES - 109 Price: $90.00

Museum Quality! Very fine polished halves of an Ochoco Thunderegg from one of several beds between Prineville and Mitchell, Oregon. The matched set is an absolute show piece. Beautiful orange and red moss against the blue background. All agate. Two more photos follow. Size: 4 1/4"h x 4 1/4"w x 1 1/2" deep average for each half. Weight: 2 lbs. 9 oz. total for the pair.

Thunderegg Set TES - 109 Price: $90.00

Closeup of left Ochoco egg half.

Thunderegg Set TES - 109 Price: $90.00

Closeup of right Ochoco egg half.

Thunderegg Set TES - 108 Price: $50.00

Striking! The contrast of color stands right out! The polished halves are from the Old Priday Blue Bed in Eastern Oregon. The matched set has a border of fortification agate and a center of water level lines. A very nice addition to any collaction. Two more photos follow. Size: 2 5/8"h x 2 5/8"w x 1 1/8" deep average for each half. Weight: 1 lb. total for the pair.

Thunderegg Set TES - 108 Price: $50.00

Closeup of left Old Priday egg.

Thunderegg Set TES - 108 Price: $50.00

Closeup of right Old Priday egg.

Thunderegg Set TES - 106 Price: $75.00

This is a special museum quality pair of Black Rock Desert Thunderegg halves from the Black Rock Desert in Nevada. The polished matched set would make an excellent decorative display. Mostly fortification agate with beautiful moss framing the agate. Two more photos follow. Size: 4 1/4"h x 4 1/2 "w x 1 3/4" deep average for each half. Weight: 2 lbs. 13 oz. total for the pair.

 

Thunderegg Set TES - 106 Price: $75.00

Photo of left thunderegg half.

Thunderegg Set TES - 106 Price: $75.00

Photo of right thunderegg half.

Thunderegg Set TES - 103 Price: $25.00

A very stricking pair of polished Richardson Ranch Thundereggs from Eastern Oregon. These are museum quality. The agate centers are shades of light blue and each has a corner pocket trimed in red. Each one contains some hollow tubes. Size: 2 1/2"h x 2 1/4 "w x 1" deep average for each half. Weight: 9 oz. total for the pair.

 

Thunderegg Set TES - 65 Price: $25.00

One pair polished Calico thundereggs from near the Calico Mountains, McDermit, Oregon. The halves are a fine example of eggs from this area. The agate centers are bordered with orange moss and the fortification agate is blue. The very centers are quartz. A very nice pair. Size: 3 1/4"h x 4 "w x 1 1/2" deep average for each half. Weight: 1 lb. 13 oz. total for set.

Thunderegg Set TES - 104 Price: $25.00

A pair of museum quality Richardson Ranch thunderegg halves from Eastern Oregon. The polished halves have an excellent beauty about them. There are all shades of blue to black and a band of white. The picture of the left one shows some green, but that is a reflection of what I was wearing. It is the same as one on right. Size: 2 1/2"h x 3 "w x 1 1/4" deep average for each half. Weight: 15 oz. total for the pair.

 

Thunderegg Set TES - 74 Price: $10.00

Richardson Ranch Thunderegg halves from Eastern Oregon. The polished halves are a combination of blue, grey, and white with highlights of red spots. An interesting assortment of patterns. Size: 2 3/4"h x 2 1/2"w x 3/4" deep average for each half. Weight: 8 oz. total for set.

Thunderegg Set TES - 100 Price: $25.00

An very good matched set of Succor Creek thundereggs. The polished halves are from Nysa & Jordan Valley area in Eastern Oregon. The agate centers are a grey-blue fortification agate. One has a pocket in center and other has a small opening of mini-crystals. Size: 3 1/2"h x 4 "w x 1 1/2" deep average for each half. Weight: 1 lb. 14 oz. total for set.

Thunderegg Set TES - 105 Price: $60.00

Black Rock Desert Thunderegg pair from the Black Rock Desert in Nevada. A fine polished matched set of exceptional yellow moss within the agate. These are very stricking! Two more photos follow. Size: 3 1/2"h x 4 3/4 "w x 1 1/4" deep average for each half. Weight: 2 lbs. 7 oz. total for the pair.

 

Thunderegg Set TES - 105 Price: $60.00

Photo of the left thunderegg half.

Thunderegg Set TES - 105 Price: $60.00

Photo of the right thunderegg half.

Thunderegg Set TES - 107 Price: $50.00

Very fine polished halves of Old Priday Blue Bed Thunderegg from Eastern Oregon. The matched set is a show piece. Beautiful scenes of ocean and tubes in the sky. All agate. Two more photos follow. Size: 3 3/4"h x 3"w x 1 3/8" deep average for each half. Weight: 1 lbs. 10 oz. total for the pair.

 

Thunderegg Set TES - 107 Price: $50.00

Closeup of left half of Old Priday egg.

Thunderegg Set TES - 107 Price: $50.00

Closeup of right half of Old Priday egg.

Thunderegg Set TES - 110 Price: $20.00

One half of matching set. Very fine polished half of a Calico thunderegg from Mc Dermitt. Oregon. This shows an interesting agate formation with a pocket that goes to the back. The other half is listed seperately. Size: 4"h x 4 3/4"w x 2" deep for this half. Weight: 1 lbs. 13 oz. total for this half.

 

Thunderegg Set TES - 111 Price: $15.00

One half of matching set. Very fine polished half of a Calico thunderegg from Mc Dermitt. Oregon. This shows an interesting agate formation with four pockets. The other half is listed seperately. Size: 4"h x 4 3/4"w x 2" deep for this half. Weight: 1 lbs. 8 oz. total for this half.

Thunderegg Set TES - 112 Price: $20.00

One half of matching set. This very fine polished half of a Ochoco thunderegg is from East of Prineville, Oregon. The agate center is a billowy white with some brown specks. The outside edge of agate center is framed with yellow ochre moss. At the base there is aditional moss in green. The other half is listed seperately. Size: 4 1/4"h x 3 3/4"w x 1 3/8" deep for this half. Weight: 1 lbs. 4 oz. total for this half. 1007

 

Thunderegg Set TES - 113 Price: $20.00

One half of matching set. This very fine polished half of a Ochoco thunderegg is from East of Prineville, Oregon. The agate center is a billowy white with some brown specks. This half has white opaque water level lines in the agate center. The outside edge of agate is framed with yellow ochre moss with some green moss at the base. The other half is listed seperately. Size: 4 1/2"h x 4"w x 2" deep for this half. Weight: 1 lbs. 8 oz. total for this half. 1007

 

 

Thunderegg Set TES - 114 Price: $20.00

A beautiful half of matching set. This very fine polished half of a Ochoco thunderegg is from East of Prineville, Oregon. The agate center is a fine creamy blue with water level lines and fortification agate above. There are touches of red and green moss at outer edges of agate. The other half is listed seperately. Size: 4 1/2"h x 4 1/4"w x 2 1/8 " deep for this half. Weight: 1 lbs. 13 oz. total for this half. 1007

 

 

 

Thunderegg Set TES - 115 Price: $20.00

A beautiful half of matching set. This very fine polished half of a Ochoco thunderegg is from East of Prineville, Oregon. The agate center is a fine creamy blue with water level lines and fortification agate above. There are touches of red and green moss at outer edges of agate. The other half is listed seperately. Size: 4 1/2"h x 4 1/4"w x 2 " deep for this half. Weight: 1 lbs. 9 oz. total for this half. 1007

 

Thunderegg Set TES - 117 Price: $20.00

Old Priday Red Bed. Now the Richardson Ranch in Eastern Oregon. A beautiful half of matching set. This polished half has a red flame with white water level lines in middle if flame. Very stricking. Unusual. Next two photos are closeups of center. The other half is listed seperately. Size: 6 1/2"h x 4"w x 1 1/4 " deep for this half. Weight: 1 lbs. 13 oz. total for this half. 1007

 

 

 

Thunderegg Set TES - 117 Price: $20.00

Closeup of flame.

Thunderegg Set TES - 117 Price: $20.00

Closeup of tail end of flame and what looks like moss.

Thunderegg Set TES - 118 Price: $25.00

Richardson Ranch Moss Bed. A small, but mighty pair with beautiful red to green moss. Very stricking. Unusual. Both halves are polished. Size: 2"h x 1 1/2"w x 7/8" deep for each half. Weight: 5 ozs. total for both.

Thunderegg Set TES - 119 Price: $30.00

A pair of polished thunderegg halves from Deming, New Mexico. Both halves are polished. Nice fortification agate with white water level lines inside. The agate is translucent, showing a moon in background of one. Size: 2 3/4"h x 2 3/4"w x 7/8" deep average for each half. Weight: 11 ozs. total for both.

Please click on Thunderegg Photographs to enlarge.

 

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This site was last updated 07/13/08

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