Botryoidal Chalcedony (Grape Agate) - VAR 034

Botryoidal amethyst chalcedony (grape agate)

Measurements:  58 x 43 x 33 mm

Description:  A cluster of (mostly) amethyst coloured botryoidal chalcedony aggregates with some aggregates having a greenish colouring, possibly caused by inclusions of celadonite. The specimen has bits of limestone attached. 

Some of the aggregates have nicks.

Background: These specimens first appeared on the global mineral market in 2016. Although they are fairly abundant at the moment, it is not known how much of this treasure is still left in the ground.

Weight of Specimen:  58.8 g

Chemical Composition:  SiO (quartz var. chalcedony)
                                                     K(Mg,Fe2+)Fe3+(Si4O10)(OH)2  (celadonite)

Hardness on Mohs Scale:  (quartz var. chalcedony) 
                                          (celadonite)  2

Location:  Batu Manakarra mining district - Mamuju Area, Barat Province, Sulawesi Island, Indonesia.

Specimen Code:  VAR 034

US $ 80

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