Chalcedony (Grape Agate) Cluster – VAR 041

Measurements:  43 x 32 x 23 mm

Description:  A multi-sided cluster of purple botryoidal chalcedony crystals, with some aggregates having a greenish colouring, possibly caused by inclusions of celadonite.

The specimen has a few nicks and contact marks.

Weight of Specimen:  20.2 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 041

US $ 45