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Jasper

The JASPER... This wonder, made of mainly silica (80 to 95%) is a microcrystalline to cryptocrystalline rock, well...

Agate

The AGATE... This other wonder, also made of mainly silica, has a trigonal crystalline system and is also well...

Thunderegg

The THUNDEREGG... Born in a rhyolite matrix (acidic lava), thundereggs (or lithophysae) are created from a...

Pareidolia

When one talk about pareidolia, quand I talk about Pareidolia... This piece, what do you see? Personnally, I...

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