Chalcedony & Druzy Quartz - Bulgaria Chemical Formula: SiO2(+Al2O3)

Chemical Formula: SiO2(+Al2O3)

these specimens are composed of 3 different minerals

8-ton "El Chaco"

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Smoky Quartz $3/each

Chalcedony & Druzy Quartz - Bulgaria Chemical Formula: SiO2(+Al2O3)Bulgaria has been producing some absolutely extraordinary specimens over the past few years. Here is a great example of chalcedony coated in druzy quartz crystals giving it a sugar like quality. Size: 5. 1 in. Weight: 18. 3 oz Location: Bulgaria Quartz is the second most abundant mineral on Earth accounting for around 12% of the Earth's crust. Its name is derived from the German word "quarz" meaning hard. Quartz can form in trigonal or hexagonal