A polished Cold Mountain Thunderegg specimen featuring a mix of translucent chalcedony and brecciated jasper, in muted shades of pink with brick red, brown, and blue-grey detailing. Polished face: 8cm x 6.2cm Approx. 1" deep3.8oz Cold Mountain Thundereggs are from the Sierra...
This polished specimen displays dusty pink with hints of yellow and gray-blue, and a small chalcedony-filled vugg that goes through to the back of the specimen. This piece does have a crack that has been treated. 5.25" x 3.25" x 1.5"14.3 oz Cold...
This polished specimen displays dusty pink with hints of yellow and gray-blue, and a small vugg with partial chalcedony growth. 6.5" x 4.25" x 1.75"2 lb 3.1 oz Cold Mountain Thundereggs are from the Sierra Mountains in Mexico. The thundereggs can contain...
Kingstonite, also commonly called Kingston Ore or Kingstone Conglomerate, is a conglomerate rock primarily made up of native copper, reddish rhyolite, and felsite pebbles. It is found near the Kingston Copper Mine in Keweenaw, Michigan. This polished Kingstonite cabochon features...
Kingstonite, also commonly called Kingston Ore or Kingstone Conglomerate, is a conglomerate rock primarily made up of native copper, reddish rhyolite, and felsite pebbles. It is found near the Kingston Copper Mine in Keweenaw, Michigan. This polished Kingstonite cabochon features...
These polished halves of a Blue Star Thunderegg show an open cavity of botryoidal chalcedony coated in sparkling crystals, with pointed edges extending to the outer edges of the nodule. The rest of the egg is made from gray and...
These polished halves of a large Blue Star Thunderegg show two fused open cavities revealing botryoidal chalcedony formations coated in sparkling druzy, with one half having secondary mineral growth over the small crystals and the other having a small hole...
Baker Ranch Thundereggs come from Luna County, New Mexico. This polished specimen has white, gray, black, and red agate displaying parallax and chromatography, within a brown rhyolite matrix.
7.8cm x 4.2cm x 2.6cm
3.0oz
Kingstonite, also commonly called Kingston Ore or Kingstone Conglomerate, is a conglomerate rock primarily made up of native copper, reddish rhyolite, and felsite pebbles. It is found near the Kingston Copper Mine in Keweenaw, Michigan. This polished Kingstonite cabochon features...
These polished halves of a Blue Star Thunderegg show two fused cavities revealing botryoidal chalcedony coated in sparkling druzy, inside feathery banded agate in clear to pale blue hues and gray and brown rhyolite. The chalcedony shows green fluorescence under...
This Cold Mountain Thunderegg polished cabochon shows a mix of translucent, foggy chalcedony and brecciated patterning in a mix of khaki hues with spots of red, pink, and orange. 36mm x 26mm Designer Cabochons: The Gem Shop, Inc. produces free form...
These polished halves of a Blue Star Thunderegg show botryoidal chalcedony coated in sparkling crystal druzy, inside feathery banded agate in clear to pale blue hues. The shape of the chalcedony comes to several pointed edges like a star, with...
This Cold Mountain Thunderegg polished cabochon shows brecciated patterning in a mix of warm brown and muted orange, with hints of mauve and blue-grey. 19.5mm x 38mm Designer Cabochons: The Gem Shop, Inc. produces free form designer cabochons for the custom...
Kingstonite, also commonly called Kingston Ore or Kingstone Conglomerate, is a conglomerate rock primarily made up of native copper, reddish rhyolite, and felsite pebbles. It is found near the Kingston Copper Mine in Keweenaw, Michigan. This polished Kingstonite cabochon features...
This polished Blue Star Thunderegg shows brecciated rhyolite filled with translucent agate with gentle feathery bands in white to pale blue. The surface is scattered with tiny open vugs that reveal hints of crystal druzy. The chalcedony shows green fluorescence...
Kambaba Jasper, widely believed to be a stromatolite (similar to fossilized algae), is actually a rhyolite found in volcanic rock. It has a solid medium to forest green background, with black circular formations caused by amphibole needles. From Madagascar. Shown...
