Quartz pebble
SiO2, Quartz
mineral
Category
Metamorphic Or Igneous
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Quartz
Silicon Dioxide (SiO2)
mineral
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
mineral
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
mineral
Moonstone
Orthoclase (KAlSi3O8)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Biotite or Phlogopite Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Pale greenish quartz-bearing rock, possibly serpentine or altered feldspar
Tentatively serpentinite-related rock (serpentine-group minerals) or altered granitic material; identification is uncertain from the photograph
metamorphic
Sunstone and Garnet
Plagioclase Feldspar ((Na,Ca)(Al,Si)4O8) and Almandine Garnet (Fe3Al2(SiO4)3)
gemstone
Sunstone / Peach Moonstone (Feldspar variety)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Epidote-bearing Rock
Epidote / Silicate mineral aggregate
metamorphic
Quartz pebble
Silicon dioxide (SiO2)
mineral
Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation
SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)
mineral
Sapphire
Corundum (Al2O3)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Yellow Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Blue Apatite
Fluorapatite / Apatite Group Ca5(PO4)3(F,Cl,OH)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Blue gemstone, likely iolite or blue sapphire
Iolite (cordierite, Mg₂Al₄Si₅O₁₈) or corundum (sapphire, Al₂O₃)
gemstone
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Magnetite (Octahedral Crystal)
Magnetite (Fe3O4)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Aventurine (Green Quartz)
Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
metamorphic
Sapphire
Corundum (Al2O3)
gemstone
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Feldspar
Feldspar (Orthoclase/Microcline)
mineral
Pyrite Nodules / Weathered Pyrite
Iron Sulfide (FeS2)
mineral
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with mineral inclusions
Mineral/Mineraloid within a rock matrix
Quartz vein fragment
Quartz, silicon dioxide (SiO₂), likely milky to translucent quartz with iron-oxide or clay inclusions
mineral
Quartz-rich rock, possibly milky quartz or quartzite
Quartz (SiO₂); if quartzite, recrystallized quartz sandstone
metamorphic
Likely quartz-rich stone (possibly milky quartz or quartzite)
Quartz, silicon dioxide (SiO₂), or quartzite if interlocking grains are present
mineral