This Specimen has been sold.
4.1" Polished Colorful Agate with Native Copper - Java, Indonesia
This is a beautiful, 4.1" wide section of Indonesian agate that was collected from Java, Indonesia. It features red, white, and yellow-orange coloration, with spots of lustrous native copper visible within the agate. It has been cut flat and polished to a glossy finish on one side. This material is perfect for lapidary projects.
Comes with an acrylic display stand.
Comes with an acrylic display stand.
Agate is a variety of microcrystalline quartz (chalcedony) that displays translucence and, in some cases, banding. Agate primarily forms when silica-rich fluids fill pockets within rocks and/or fossils, depositing the silica along the walls of the rock. This process can result in banding patterns, as the compositions and impurities of these depositing fluids change over time. These banding patterns can either form as flat layers, creating linear patterns known as waterline agate, or as rounded layers, forming more common ring-like patterns. These patterns depend on the surfaces available for deposition.
Native copper is an uncombined form of copper that occurs as a natural mineral. Copper is one of the few metallic elements to occur in native form, although it most commonly occurs in oxidized states and mixed with other elements. Native copper was an important ore of copper in historic times and was used by pre-historic peoples.
Native copper occurs rarely as isometric cubic and octahedral crystals, but more typically as irregular masses and fracture fillings. It has a reddish, orangish, and/or brownish color on fresh surfaces, but typically is weathered and coated with a green tarnish of copper carbonate.
Native copper occurs rarely as isometric cubic and octahedral crystals, but more typically as irregular masses and fracture fillings. It has a reddish, orangish, and/or brownish color on fresh surfaces, but typically is weathered and coated with a green tarnish of copper carbonate.
SPECIES
Chalcedony var. Agate & Native Copper
LOCATION
Java, Indonesia
SIZE
4.1 x 2.2", .85" thick
CATEGORY
ITEM
#293380