EMAIL

Janos Thundereggs
Janos, Chihuahua Province, Mexico
Note: Also called "Rainbow Agate" but I prefer to go with "Janos" to avoid
any confusions with those agate under same trade name from Brazil and Japan.

     The large reddish thundereggs were found at Janos, just south of US-Mexico border and the problem with them is that the large thundereggs tend to contain thin crescent-like agate cores. The miners in the past would break down the large thundereggs to extract the agate cores out so the whole thundereggs are scarce in the old stocks. Recently, a miner finally brought in the whole thundereggs with larger and better agate cores and he has to break the thundereggs in half to check the insides since a low percentage of the thundereggs will contain good and wider agate cores.
   The typical colors are dull yellow to brown and occasionally, the thundereggs are found with brighter red, yellow and black colors. Few thundereggs had been found with brighter colors, tighter banding and stronger shadowing effects.  I prefer to call them "Janos Thundereggs" instead of "Rainbow Agates" to avoid any confusion with the fact that the Brazillian Agates from a specific location and some Japanese agates are passed as "Rainbow Agates".

Click on the pictures to see larger and closer-up pictures.
pic
Rough Appearance: Broken  reddish chunks with crescent-like agates usually showing.
All broken from large thundereggs by miners just to get to agate cores

 pic
pic
with Shadowing effect, old stock
Strong shadowing effect,
pic
pic
Trinoid (three points) type, tight banding and coloring
Unusual to find a Jano thundereggs
with so much agate in it

pic
Old Stock


EMAIL