• A mineral specimen, placed on a white surface with a measurement scale to the right.
  • A mineral specimen with green crystal formations, placed on a white surface with a measurement scale to the right.
  • A mineral specimen with a rough surface, placed on a white surface with a measurement scale to the right.
  • A mineral specimen with a dark, metallic surface and striations, placed on a white surface with a measurement scale to the right.
  • A mineral specimen with a bluish-purple and white marbled pattern, placed on a white surface with a measurement scale to the right.
  • A mineral specimen with green crystals on a dark, rough rock matrix, placed on a white surface with a measurement scale to the right.
  • A mineral specimen with green and white crystalline formations on a rough brown base, placed on a white surface with a measurement scale to the right.
  • A mineral specimen with a layered, fibrous texture, placed on a white surface with a measurement scale to the right