Copper Mineral Cluster

4288 × 2848

Clear Quartz Crystal Cluster

1597 × 1596

Large Quartz Crystal

1280 × 946

Two Quartz Crystals

1024 × 768

Red Mineral Specimen

800 × 600

blue and gold mineral cluster

1600 × 1200

Gold Crystals on Rock

1239 × 1024

Gold Nugget — Dramatic

3485 × 2785

Gold specimen from Eagles Nest Mine

2648 × 3176

Bismuth Crystal Formation

3072 × 2304

Agate Stone Cross-section — Brown

1920 × 1200

Close-up of layered mineral formation

1920 × 1200