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All our minerals
Discover our selection of agate samples, a variety of
chalcedony
composed of silica (SiO
2
). Valued for its unique concentric patterns and varied colors, agate forms in rock cavities by precipitation of silica dissolved in water.
Agate Brazil (ref: C05-03)
10,6 x 5,9 x 0,6 cm
Agate Brazil (ref: C05-08)
10,0 x 7,4 x 0,5 cm