Blue grey Agate Geode Slice

polished slice of a blue grey agate geode with natural banding and a crystalline center.
The agate slice has a natural, rough edge finish.
This specific weight (111.8) most likely of the common banded variety from Brazil. The blue coloration is often the result of dyeing the stone to enhance or change its natural color, which can range from brownish tones to white and grayMineral Composition: Agate is a variety of banded chalcedony, which is a microcrystalline form of quartz.
Formation: It forms in cavities within volcanic rocks as layers of silica build up over time, with the central part often remaining hollow or forming tiny quartz crystals (druzy).
Hardness: Blue agate has a hardness of 6.5 to 7 on the Mohs scale.
Meaning (Metaphysical): In various beliefs, blue agate is associated with calming energy, communication, and emotional balance.