8.4" Colorful, Polished Agate Slab -"Big Dig" Site, New Mexico

This is a gorgeous slab of colorful Big Dig agate from the Big Diggings site in New Mexico. It features purple-blue and white agate that surrounds vibrant red and orange, moss-like formations.

It comes with an acrylic display stand.

Chalcedony is any microcrystalline variety of silica composed of very fine intergrowths of quartz and moganite. Microcrystalline meaning the crystals are microscopic and cannot be observed by the naked eye. Both quartz and moganite have the same chemical formula SiO2 (silicon dioxide) but different crystal structures. When free from impurities, chalcedony is colorless and transparent. Dependent on impurities present during formation, chalcedony can form in a wide variety of colors including red, yellow, green, blue, purple, grey, white and numerous color hues in between. Chalcedony is quite hard, being a 7 on the Mohs Hardness Scale, which makes sense considering quartz is the benchmark mineral for a 7.

Chalcedony var. Agate
Big Diggings ("Big Dig") Site, Deming, New Mexico
8.4 x 2.4' .2" thick