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Big natural stone green amber on white background

Magnified close up of porphyritic granite with fledspar.

20 different types of rocks or stone isolated on background with name of the rocks. rocks, collection of stones isolated.

Silica Quartz mineralisation around purple fluorite cubic crystals in a mineral rock sample

Petrified wood, 20 million years old wood. Wood turned into stone

Eroded sedimentary rocks of Cedar Breaks National Monument near Bryan Head Utah

Agate stone with quartz geode. Multicolored silica bands colored with metal oxides are visible. Macro photography of the surface of the cut. Origin: Atlas mountains, Morocco.

Piece of natural mineral gemstones in gift store

Microscopic photo of a thin section of calcareous tufa of Holocene age.

Unique underground geology of stalactites and stalagmites.

a sample of minerals from nature

Mineral Fusinus sp. Pliozän

Microscopic photography of crystal and shell fragmets of marine creatures and associated limestone rocks.

Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).

Arkaim, Chelyabinsk region, Russia - August, 24, 2021: Collection of rocks. The inscription on the plate: Yashma (No. 25), Aleksandrovsky settlement, Kizilsky district. A class of minerals based on siliceous rock. The color is very different, often striped or spotted. Known to man since the Paleolithic era - weapons and tools were made from it. Used in arts and crafts, jewelry. Ural deposits are the richest and most famous

Fossils of marine life.Ammonite fossils

set of various tumbled black stones with names cutout on white background

Pegmatite rock close up with many crystals.

The stalactites are in wooden trays in an exhibition hall

Gastric mucosa intestinal metaplasia under microscopy

A sedimentary rock on the dirt road in the countryside

Fragment of uranium or yellow cake

Stunning rock formations in Capital Reef National Park, Utah, USA. Lots of unique shapes made out of red, orange and grey stones.

Agate is a microcrystalline variety of quartz, chiefly chalcedony, cryptocrystalline form of silica. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks but can be common in certain metamorphic rocks. Most agates occur as nodules in volcanic rocks or ancient lavas where they represent cavities originally produced by the disengagement of volatiles in the molten mass which were then filled, wholly by siliceous matter deposited in regular layers upon the walls. Cathedral Valley, Capitol Reef National Park, Utah.

Coloured transmission electron micrograph (TEM) of a small arteriole showing, from lumen: endothelium (magenta), discontinuous internal elastic lamina (blue), cross-sectioned smooth muscle fibers (cytoplasm, red, nucleus, light yellow) and connective tissue of adventitia (green).

Image of a crystal cup of enlightenment with colored light

chrysoprase, closeup of the stone

Tiger’s eye mineral stone sample macro photography

special abstract marble white and orange black color pattern background

Smoky quartz

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