Revealing Mexico's marvels with natural, handpicked, ethically Sourced Agates, gems, and Minerals.
Our appreciation for beautiful stones drives us to share their splendor with you and the global community. Explore our collection of precious mineral specimens, cabochons, Mexican artworks, and other treasures from the mountains of Mexico.
已售完
已售完
$850.00
已售完
$800.00
$775.00
$750.00
$700.00
$650.00
$650.00
$650.00
$550.00
$540.00
$540.00
$500.00
$500.00
$450.00
$450.00
$450.00
$450.00
THUNDER EGGS
查看全部
A thunderegg (or thunder egg) is a nodule-like rock, similar to a filled geode, that is formed within rhyolitic volcanic ash layers. Thundereggs are rough spheres, most about the size of a baseball—though they can range from a little more than a centimeter (one half inch) to over a meter (three feet) across. They usually contain centres of chalcedony which may have been fractured followed by deposition of agate, jasper or opal, either uniquely or in combination. Also frequently encountered are quartz and gypsum crystals, as well as various other mineral growths and inclusions. Thundereggs usually look like ordinary rocks on the outside, but slicing them in half and polishing them may reveal intricate patterns and colors. A characteristic feature of thundereggs is that (like other agates) the individual beds they come from can vary in appearance, though they can maintain a certain specific identity within them.
Thunderegg is not synonymous with either geode or agate. A geode is a simple term for a rock with a hollow in it, often with crystal formation/growth. A thunderegg on the other hand is a specific geological structure. A thunderegg may be referred to as a geode if it has a hollow in it, but not all geodes are thundereggs because there are many different ways for a hollow to form. Similarly, a thunderegg is just one of the forms that agate can assume.
Thunderegg is not synonymous with either geode or agate. A geode is a simple term for a rock with a hollow in it, often with crystal formation/growth. A thunderegg on the other hand is a specific geological structure. A thunderegg may be referred to as a geode if it has a hollow in it, but not all geodes are thundereggs because there are many different ways for a hollow to form. Similarly, a thunderegg is just one of the forms that agate can assume.
促销
$45.00
$85.00
促销
$45.00
$85.00
促销
$25.00
$45.00
促销
$30.00
$45.00
促销
$30.00
$52.00
促销
$40.00
$60.00
促销
$40.00
$60.00
$60.00
Featured product
EL CORAZON DE CHIHUAHUA
Exploring the Heart of Chihuahua: the story behind Uncovering the Best Agate in the World.
LA GUADALUPE
discover the narrative of the world record largest laguna specimen ever found and uncover the reasons behind its superior status
Blog posts
THE GUADALUPE
La Guadalupe. This magnificent beauty is not just an ordinary rock; it is a majestic masterpiece that will leave you in awe.
THE RICE MUSEUM OF MINERALS
“I wish more collectors could walk some of our deserts valleys and mountains and see for themselves the amazing specimens we are collecting,” Ray said. “Collectors throughout the agate community know that the agates, jaspers, and thunder eggs from our deposit are among the best of their kind due to their exquisite beauty. Until you can visit and collect on your own, I invite you to check out some of the material we are loaning to the museum.”
HOW WE POLISH
it is crucial to rely on the sun's direct light to inspect the stone for any imperfections. Natural light is essential as artificial lighting in buildings can sometimes mask imperfections, leading to a subpar final result.