Man Made Material (Jewelry, Metal Alloy)

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Biotite Schist

Biotite Schist

Milky Quartz

Silicon Dioxide (SiO2)

Lepidolite

K(Li,Al)3(Al,Si)4O10(F,OH)2 (Lithium-bearing phyllosilicate)

Jade

Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.

Milk Quartz (Vein Quartz)

Quartz (Silicon Dioxide, SiO2)

Sandstone Clast

Arenite (primarily SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Limestone

Calcium Carbonate (CaCO3)

White Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Iron Oxide cement)

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide (Fe2O3) cement

Green Kyanite

Kyanite (Al2SiO5)

Sandstone (with Liesegang rings or Oxidation)

Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Milky Quartz (Water-worn pebble)

Quartz (Silicon Dioxide, SiO2)

Quartz (specifically Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Druzy Agate (specifically Black Druzy Agate)

Silicon Dioxide (SiO2)

Basalt

Vesicular Basalt (Mafic volcanic rock)

Chert (with Chalky Cortex)

Silicon Dioxide (SiO2)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Granite

Granite (Phaneritic Igneous Rock)

Granite Pebble

Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Orange Quartzite (River Pebble)

Quartzite (SiO2 with iron oxide impurities)

Chert (Black Chert/Flint)

Silicon Dioxide (SiO2)

Milky Quartz Pebble (Iron-stained)

Silicon Dioxide (SiO2)

Fossiliferous Limestone

Calcite-rich Sedimentary Rock (CaCO3)

Sandstone

Arenite (primarily composed of SiO2)

Chert / Flint Nodule

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartzite (Milky Quartz Cobble)

Silicon Dioxide (SiO2)

Quartzite (Sugar Quartz)

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Peridot

Olivine (Mg,Fe)2SiO4

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Garnet Schist

Almandine Garnet-Mica Schist (X₃Y₂(SiO₄)₃)

Chert / Flint (with quartz or calcite inclusion)

Silicon dioxide (SiO2)