Metamorphic Rock (Variety Of Quartz)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Granitoid (Granite/Gneiss)

Granitoid silicate rock, primarily quartz and feldspar

Quartz (possibly milky quartz or quartz with inclusions)

SiO2 (Silicon Dioxide)

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Serpentine

Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Dyed Agate

Silicon Dioxide with artificial pigment (SiO2)

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Sandstone (Quartz-rich)

Arenite (SiO2 based clastic rock)

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Quartz with Basalt inclusion

Silicon Dioxide (SiO2) with mafic silicate rock

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with Titanium/Manganese/Iron trace elements

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)

Apatite

Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granite

Phaneritic Plutonic Felsic Rock (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 + SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (SiO2 + Fe2O3)

Grey Quartzite Pebble

Quartzite (primarily SiO2 - Silicon Dioxide)

Aventurine (likely Green Aventurine)

Quartz (SiO2) with included minerals (Fuchsite or Chlorite for green color)

Chert (Nodular Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Conglomerate (River Rock)

Clastic sedimentary rock (primarily SiO2)

Riverstone Jasper (Chalcedony)

Silicon Dioxide (SiO2)

Rose Quartz

SiO2 (Silicon Dioxide)

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Granite (Pink/Potassium Feldspar rich)

Granite (K-feldspar rich intrusive igneous rock)

Gneiss (Metamorphic Pebble)

Gneissic Metamorphic Rock

Pebble (river rock/beach pebble)

Pebble (clast size class)

Moonstone (bead form)

Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Cherty Flint/Jasper variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Quartz (Gray or Smoky variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon dioxide (SiO2)