Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)
Black Onyx
Chalcedony (Silicon Dioxide, SiO2)
Diamond
Diamond (pure native carbon, C)
Amethyst Geode
Silicon Dioxide (SiO2) with trace Iron (Fe3+) impurities
Porphyritic Basalt (Flowerstone)
Porphyritic Basalt (Mafic volcanic rock)
Pearl (with Peridot)
Calcium carbonate (CaCO3) + Conchiolin; Peridot: Magnesium iron silicate (Mg, Fe)2SiO4
Rough Diamond
Diamond (pure Carbon, C)
Tanzanite (Blue Zoisite)
Ca2Al3(SiO4)(Si2O7)O(OH) + (V) - Vanadium-bearing Zoisite
Diamond
Native Carbon (C)
Opalite
Synthetic Opalised Glass
Diamond
Cubic carbon (C)
Ruby
Corundum (Al2O3:Cr)
Granitic Pegmatite
Granite Pegmatite (principally KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)
Ruby
Corundum (Al2O3) with Chromium traces
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Shale or Slaty Mudstone
Argillaceous sedimentary rock
Iolite (Cordierite)
Magnesium Iron Aluminum Silicate (Mg,Fe)2Al4Si5O18
Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
Rough Diamond
Diamond (pure Carbon, C)
Anthracite Coal
Anthracite
Diamond
Diamond (pure Carbon, C)
Diamond (faceted)
Diamond (Pure Carbon, C)
White Sapphire
Corundum (Al2O3)
Chert Breccia
Brecciated Chert (Microcrystalline Silica)
Glaucophane-bearing Schist (Blueschist)
Blueschist (Glaucophane-Lawsonite Schist)
Stilbite
Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)
Placer Gold Nugget
Native Gold (Au)
Ruby (Corundum)
Al2O3 (Aluminium oxide with Chromium impurities)
Basalt
Basalt (extrusive igneous rock)
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
Sandstone (Quartz-rich)
Arenite (SiO2)
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with iron oxide inclusions/staining (Limonite/Hematite)
Schist
Mica Schist (variety: Muscovite/Biotite Schist)
Halite (Rock Salt)
Halite; NaCl (Sodium Chloride)
Diamond
Diamond (carbon allotrope), C (chemical formula)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
Jadeite Jade
Jadeite (Sodium Aluminum Silicate, NaAlSi₂O₆)
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions