Red and black mineral specimen

1400 × 1171

fossilized shell impressions in rock

2304 × 1728

Rock Formation with Fossils

3888 × 2592

Man at Desk with Fossils

1280 × 800

Blue Mineral Specimen — Dramatic, Photograph

2504 × 1912

Golden Crystals on White Matrix

2700 × 2025

Mesolite mineral from India

1280 × 1024

Layered Rock Formation — Brown, Natural, Photograph, Sediment

3456 × 2304

Layered Rock Formation — Brown, Natural, Photograph, Strata

3456 × 2304

Rock Formation with Layers — Brown, Natural

4000 × 3000

Layered Rock Formation — Brown, Natural

1280 × 800

Red Rock Formations — Sunset

1920 × 1200