Public domain photos

The image shows a piece of white and black calcite on a blue surface. The calcite is composed of small, white crystals that sparkle in the light, and the blue surface provides a stark contrast to the white of the calcite.

The image shows a piece of white and black calcite on a blue surface. The calcite is composed of small, white crystals that sparkle in the light, and the blue surface provides a stark contrast to the white of the calcite.Open in library