Blue Agate Mineral — Calm

1242 × 2208

Blue and Yellow Agate Slice

2880 × 1800

Amethyst Crystal Cluster — Purple, Neutral, Photograph

1795 × 1433

Blue Topaz Gemstone

1280 × 1024

Cavers in Crystal Cave

1600 × 1200

Pyrite Mineral Cluster — Blue

3299 × 2806

Purple Crystal Cluster — Dramatic, Photograph, Dark Background

3840 × 3072

Colorful Tourmaline Crystal — Green, Dramatic

1280 × 850

Green Crystal Cluster — Dramatic

2816 × 1584

Purple Amethyst Cluster

3072 × 2304

Windmills on a Hill — White, Serene, Afternoon, Photograph, Hills

1920 × 1440

Layered Cave Formations — Brown, Natural, Photograph

1920 × 1440