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Janos Agates ("Rainbow Agate"), thunderegg type.
Janos, Chihuahua Province, Mexico
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    They are sometimes called "Rainbow" Agates, but I chose to go with "Janos Agates" to avoid any confusion with a specific type of Brazilian Agates passed as "Rainbow Agates". The Janos Agatese are actually a form of thundereggs that tend to contain narrow crescentlike agate filled cores on the upper part of any large thundereggs. The miners tend to break those large thundereggs apart to get at the agate cores, resulting in many of agate cores being fractured and suitable largely for cabbing. So it is difficult to obtain whole halves since many Janos agates I obtained have clipped parts (to expose agate). Those with strong colors or sharp banding are relatively rare, and same goes for those with larger agate cores too. Typical colors are dull brown, orange and yellow colors while red and purple colors are rare, and there have been some finds with brighter and more colorful Laguna-like bandings.

Updated July 2009, new specimen have 2009y in their code names..
Larger pictures of any interested specimens can be provided at request.

All specimens are cut from broken pieces, and most specimens contain some degree of fractures.

2009yJAN009-$30,
2009yJAN010-$30,
2009yJAN0012-$40, thick SLAB
Rare to find a agate with good color combo
JAN2008n29-$HOLD, contour-polished especially along the bottom edge
2009yJAN013-$60, some shadowing effect
2009yJAN011-$100, some shadowing effect, or $128 for the pair (above)