Mixed (Igneous, Sedimentary, Metamorphic, And Minerals)

Banded Gneiss

Gneiss (Metamorphic Rock)

Quartz fragment

Quartz (silicon dioxide, SiO₂)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Quartz with iron staining

Silicon dioxide (SiO2)

Quartz with Iron Oxide

SiO2

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Greenstone / Greenschist

Greenschist facies metamorphic rock

Limestone and Quartz Gravel with Petrified Wood

Sedimentary gravel aggregate and fossilized wood

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Mixed collection of rocks and minerals

Assorted specimens; visible pieces may include quartz, feldspar, jasper, and other common minerals, but individual identification is uncertain from the image

Likely mica schist

Mica-rich schist, probably biotite–quartz–feldspar schist

Likely milky quartz fragment

Quartz (SiO₂)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Crushed Stone / Gravel

Aggregate (mixed lithology)

Tumbled serpentine (likely nephrite-like greenstone)

Serpentine-group minerals, chiefly antigorite/lizardite; possibly mixed with tremolite-actinolite

Gneiss (River Cobble)

Gneiss

Weathered metamorphic rock, possibly schist or gneiss

Indeterminate; likely quartz–feldspar–mica rock, potentially greenschist or gneiss

Azurite–malachite-bearing quartz or chalcedony

Cu₃(CO₃)₂(OH)₂ azurite with Cu₂CO₃(OH)₂ malachite in SiO₂-rich matrix

Dearest Ring (Gemstones)

Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)

Quartz (Milky/Clear)

Silicon Dioxide (SiO2)

Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartz crystal fragment

Quartz, silicon dioxide (SiO₂)

Quartz Pebble

Silicon Dioxide (SiO2)

Polished agate or jasper cabochon

Cryptocrystalline quartz, SiO₂, possibly iron-rich jasper inclusions

Asphalt (Bituminous pavement fragment)

Artificial conglomerate / Bitumen-Aggregate mixture

Quartz Pebble

Silicon Dioxide (SiO2)

Tumbled jasper, likely ocean or brecciated jasper

Microcrystalline quartz (SiO₂) with iron-oxide and other mineral impurities

Green Calcite

Calcium Carbonate (CaCO3)

Likely mica-rich schist (possibly phyllite)

Muscovite–biotite schist; exact identification requires examination of a fresh surface

Smoky Quartz and Orthoclase Feldspar

Granitic Pegmatite (SiO2 + KAlSi3O8)

Blue Apatite

Apatite group (Ca5(PO4)3(F,Cl,OH))

Quartz Pebble

Silicon dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)