Minerals

A narrow passage contains a vertical flow of white and orange mineral deposits.

Large specimen of cave bacon at Jewel Cave National Monument

A mountain range is covered in trees with vibrant yellow foliage and green pine trees.

A carved opal bust of a man wearing a top hat, displayed on a black stand. The opal exhibits a subtle play of colors, giving it a luminous quality.

Tiny opal sculpture on display at Denver Museum of Nature and Science

A cluster of white, crystalline formations with sharp, radiating spines stands against a dark background.

Mesolite crystal on display at Denver Museum of Nature and Science

A circular cross-section displays concentric bands of white, gray, and tan crystalline material.

Slice through a quartz nodule on display at Denver Museum of Nature and Science

A glowing yellow crystal is nestled among dark blue crystals on a blue base.

Fluorescent minerals on display at Colorado School of Mines Geology Museum

Fluorescent minerals on display at Colorado School of Mines Geology Museum

A glowing sphere with green and red patterns, surrounded by blue and yellow luminescent minerals, against a dark background.

Fluorescent minerals on display at Colorado School of Mines Geology Museum