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Chalcedony

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QRI624062

Chalcedony

Classic Locality

Description Tabs

Description
Locality: 
Monterufoli, Pomarance, Pisa Province, Tuscany, Italy
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
10.6 × 12.2 × 6.5 cm
Weight: 
757.00gr
Description

A sizeable and significant white cream chalcedony, fully covering a large surface. The luster is strong and glassy and most 'grapes' are in mint conditions. Locally, the upper thin crust falls off and reveals a colorless interior, which often is botroidal as the surface. It comes on a solid matrix of ophiolitic breccia, which gives a pale green taint to the thick silicatic layer right underneath the display side.

Back in the 80s-90s these specimens were very popular, especially among Italian collectors. With time, they became extremely scarce and now can be only found in collections coming to the market.

 

Mineral Data
What's on the rock

Chalcedony

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Kadıköy (Chalcedon), Istanbul Province, Marmara Region, Turkey

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