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Obsidian in Newberry National Volcanic Monument.  This is all glass in the form of Pumice or Obsidian.
snowflake obsidian from Mexico
specimen of natural blue kyanite crystals in raw biotite rock cutout on white background
Galena lead metal mineral rock sample
A black obsidian stone, exposed.
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close up on chalcedony agate rock specimen
Sea salt grain on a dark background
A Large Piece of Black Tourmaline
Sodalite blue stone isolated on white background.
set of various volcanic glass Apache tears stones cutout on white background
Crystal raw ore
Moonstone on white background. Decorative stone for jeweler. Gemologist and litoterapii. Nugget.
Campo del Cielo meteorite specimen, named for the location of its recovery in Argentina.
Pyrolusite ore is a mineral basically composed of manganese dioxide.
Mineral Fusinus sp. Pliozän
Macro mineral stone Flint in the rock on a white background close up
3d render, abstract background with rock
snowflake obsidian isolated on white background
rough gemstones on neutral background
Shilajit, salajeet, mumijo, mumie, Mumiyo or Shuddha Shilajit is used in traditional medicine.
Photo collection of half-precious stones and gem stones. Here shown: Citrine. You can be sure that this photos showing exactly the stone in the title. Stones are from a collection of a Stone Expert. This stones can be used as healing stones or jewellery.
hematite crystal mineral sample on quartz and granite
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.
specimen of natural raw quartz crystal cutout on white background
Quartz und Forberit, China, Yaogangxian Mine
Macro mineral stone Schorl, Black Tourmaline on the feldspar on a white background close-up
Magnified close up of large crystal white and black granite.
Quartzite stone on white background. Macro photo of natural mineral rock
Macro mineral stone blue Celestine in the breed a white background close up.
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