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Geodes & Cathedrals & Caves

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Some of the most impressive crystals seen today are formed in Geodes(cathedrals when cut in half ). Rock is formed in many ways. When volcanic material forms, large bubbles are often trapped in the rock. Over millions of years, these bubbles form a coating on the inner surface of minerals from the surrounding soil. If water does not seep through this material, fine crystals will form that eventually become the marvellous masses of crystals we see today. Some of these cavities fill with minerals completely, like Agates, while others only coat the surface, like the magnificent Amethyst Geodes.

Geodes

Inside geodes we can find a wide selection of crystal types, at times there may be a mixture where the chemical composition has changed over millions of years, and so different crystals are allowed to form.

 

Amethyst Cathedrals / caves, Rio Grande de sul, Brazil, From $30 per kg to $150 per Kg, depending on quality

Amethyst Cathedrals, caves, Rio Grande de sul, Brazil, From $30 per kg to $150 per Kg depending on quality

Amethyst Cathedrals / caves, Rio Grande de sul, Brazil, From $30 per kg to $150 per Kg, depending on quality

Amethyst cathedrals / caves / geodes with calcite inclusions

Amethyst Geode / cave

Ammethyst cathedral / cave with large calcite crystal

Calcite zeolite Geode, Nasik India

Amethyst cathedrals / caves / Geodes

Amethyst cathedrals / caves

Amethyst cathedrals / caves

geodes / caves

cathedrals / caves, $900, 21cm x 51cm x 12cm, 10kg

 

Note: All Prices on the Crystal World Web Site are in Australian dollars unless otherwise stated.

     

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