cluster of quartz crystals

1024 × 768

Red and White Mineral Specimen

2285 × 1452

fluorescent mineral collection

2560 × 1650

microscopic view of mineral grains

2048 × 1536

Colorful mineral cross-section

1220 × 919

meteorite cross-section

3000 × 2000

Blue Mineral Crystals

2288 × 1712

meteorite with olivine crystals

1000 × 762

Red crystal mineral specimen

1923 × 1301

Blue mineral specimen

2694 × 1789

fluorescent blue crystals

4288 × 2848

Green Crystals on Rock — Dramatic, Photograph

1280 × 914