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

Golden Crystals on White Matrix

2700 × 2025

Mesolite mineral from India

1280 × 1024

Layered Rock Formation — Brown, Natural

1280 × 800

Columnar Basalt Formation — Brown, Dramatic

3750 × 1200

The Wave Rock Formation — Orange, Dramatic, Afternoon, Photograph

1600 × 1000

The Wave Rock Formation — Orange, Dramatic, Afternoon

1680 × 1050

The Wave Rock Formation — Red, Dramatic, Afternoon, Photograph, Sandstone, Blue Sky

1920 × 1200

Clear Quartz Crystal Cluster — White

2320 × 1827