Iridescent ammonite fossil

1920 × 1080

Petrified Wood Logs — Brown

1600 × 1200

green and red mineral specimen

2569 × 2098

Pyrite Crystals on Rock

3648 × 2736

Pink Mineral Specimen

1055 × 960

Layered Agate Rock

1280 × 960

fluorescent mineral under UV light

2048 × 1536

dark mineral fragments

3008 × 2000

Quartz Crystals on Rock

1280 × 853

Red Crystals on Rock

3008 × 2000

Clear Quartz Crystals

2016 × 1344

Cluster of Red Crystals — Dramatic

2288 × 1712