green apophyllite crystals mineral on black background

green apophyllite crystals mineral black background natural silicat cryptonite crystal aggregate macro photography crystallized sulfosalt phyllosilicates gemmology fine fluorine minerals semigem jewellery zeolite precious crystalline quartz geologists collectible gemstone gem geology nature stone specimen isolated mineralogy cluster transparent beauty stilbite pegmatite hobbies mine mineralogical treasure white rock collecting matrix india jewel