Agate - PA13.05

Agate (with Polished Face), Argentina 

3.75" x 2" x 2.5" / 13.05 oz

Agates are a microcrystalline variety of quartz known as chalcedony. They are distinguished from other varieties of quartz by color bands that are often concentric. This  so-called shadow agate (i.e., parallax) was hand-picked in Escorial, Chubut, Patagonia, Argentina.