About 0.75 inches in diameter. The Black Banded Agate Sphere offers a striking visual of nature’s layering and geological time in a polished, display-ready form. Carved from genuine banded agate, a variety of chalcedony in the quartz family, it features bold black and white bands that reflect the way fluids and minerals alternately deposited in rock cavities over time. It is a great piece for a desk, shelf, or learning space where it can spark curiosity about how rocks and minerals form.nWhy you’ll love this product:nnFormed from authentic banded agate, showcasing true geology: alternating layers of silica and trace minerals that give the banding effect.nPolished into a spherical shape, the bands wrap around smoothly, offering a 360° view of natural internal patterns—a tangible way to explore mineral layering.nThe high-contrast black and white banding makes it both visually compelling and scientifically interesting, inviting questions about mineral inclusions, crystal growth, and rock formation.nSuitable for a variety of users—geology students, STEM educators, hobbyists, or anyone with a curious mindset about Earth and material science.nFunctions as both decorative and educational: it elevates a space while also putting a natural science object on display that can prompt further exploration and learning.nnBring this exceptional sphere into your space and let it inspire discovery of Earth’s deep time and mineral secrets.