White Gypsum Crystals

1024 × 768

Mineral specimen with crystals

2894 × 1501

red mineral crystals on rock

1100 × 825

Pink Mineral Specimen

1055 × 960

Red crystal mineral specimen

1923 × 1301

Blue mineral specimen

2694 × 1789

green crystals on white matrix

1457 × 1500

Blue and White Mineral Cluster

1255 × 903

Mineral Specimen on Display

1024 × 768

green and red mineral specimen

2569 × 2098

Green Mineral Cluster — Yellow

1280 × 767

Purple and Black Mineral Cluster

1005 × 960