Anthropogenic (Man Made Material)

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Bauxite Ore

Hydrated aluminum oxides (e.g., Gibbsite Al(OH)3, Boehmite ̲̲̲̲AlOOH, Diaspore ̲̲̲̲AlOOH)

Shale

Shale (fine-grained clastic sedimentary rock)

Agate

Agate (a variety of Chalcedony, SiO2)

Peridot

Olivine (specific variety: gem-quality forsterite), (Mg,Fe)2SiO4

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Quartz (likely Milky Quartz)

Quartz (SiO₂ - Silicon Dioxide)

Ocean Jasper

Orbicular Jasper (variety of Chalcedony - SiO2)

Citrine Quartz

Quartz (SiO2) - specifically, a variety of macrocrystalline quartz

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Fuchsite Quartzite

Fuchsite-bearing Quartzite

Stainless Steel Spoon

Iron-Chromium Alloy (Fe + Cr + Ni)

Quartz with Iron Stains

Quartz (SiO2) with iron oxide/hydroxide staining

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Granite (tumbled pebble)

Granite (Plutonic Igneous Rock)

Quartz

Quartz (SiO₂)

Schist

Schist (various mineral compositions)

Micaceous Sandstone or Quartzite

Sandstone (lithified quartz grains, often with mica) or Quartzite (metamorphosed sandstone)

Sandstone

Arenite or Sandstone

Amber

Amber (Fossilized Tree Resin)

Quartz (in matrix)

Quartz (SiO₂)

Petrified Wood

Silicified wood (Quartz/Chalcedony)

Granite

Granite (a common type of Felsic Intrusive Igneous Rock)

Black Chert

Chert (microcrystalline quartz)

Oak-grain Laminate (Industrial/Decorative Furniture Finish)

Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Amber

Fossilized Tree Resin (Amorphous Hydrocarbon)

Diamond

Carbon (C), specifically in an isometric crystal system.

Puddingstone (Jasper Conglomerate)

Conglomerate (specific type: Jasper Conglomerate or Hertfordshire Puddingstone)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Pearls

Aragonite (calcium carbonate) and Conchiolin

Leopard Skin Jasper

Chalcedony (cryptocrystalline quartz) with inclusions

Serpentine

Serpentinite (rock), Serpentine group minerals (e.g., Antigorite, Lizardite, Chrysotile)

Yellow Jade (often Serpentine or Dolomite)

Primarily Serpentine (Mg3Si2O5(OH)4) or Dolomite (CaMg(CO3)2), though the term 'yellow jade' is also sometimes applied to varieties of true nephrite or jadeite.

Marble

Metamorphosed Limestone/Dolomite

Quartz

Silicon Dioxide (SiO₂)

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2 - a variety of actinolite, an amphibole mineral); Jadeite (Na(Al,Fe3+)Si2O6 - a pyroxene mineral)

Quartz (likely a weathered/tumbled piece)

Quartz (SiO₂)

Quartz

Silicon Dioxide (SiO2)

Chalk

Calcareous Ooze (composed primarily of coccoliths)

Himalayan Salt

Halite (mineral name), chemical formula NaCl (sodium chloride). Generally, 'Himalayan Salt' is a trade name for evaporite minerals from specific regions.

Chert (Jasper-like)

SiO2 (Cryptocrystalline Quartz)