green and yellow mineral specimen

1024 × 716

Purple crystal specimen

4288 × 2848

Blue Sapphire Crystal

1000 × 744

green mineral cluster

3677 × 2781

Purple and blue crystal specimen

3744 × 5616

Calcite crystal formation

3072 × 2304

yellow mineral specimen

1024 × 768

crystalline mineral fragments

1757 × 1181

Iridescent crystal cluster

2048 × 1536

Green Beryl Crystals — Neutral, Photograph

1280 × 845

amber gemstone specimen

2000 × 1560

Blue mineral specimen

2504 × 1912