Anthropogenic (Man Made Industrial Deposit)

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Labradorite (likely Black Labradorite or Larvikite)

Labradorite (Na,Ca)(Al,Si)4O8. If a rock, it is typically anorthosite, gabbro, or norite, or a variety of syenite called Larvikite if it is specifically from Larvik, Norway.

Slate

Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.

Sandstone (likely a river or beach pebble)

Sandstone (a clastic sedimentary rock)

Anthracite Coal

Anthracite (Carbon-based metamorphic rock)

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)

Honey Calcite

Calcium Carbonate (CaCO3)

Sandstone

Sandstone (Clastic Sedimentary Rock)

Red Jasper

Silicon Dioxide (SiO2) with Iron inclusions

Banded Chert

Microcrystalline Quartz (SiO2)

Textile (Upholstery Fabric)

Woven Polyethylene/Polyester or Cotton Blend

Garnet-Bearing Gneiss

Almandine-Garnet Gneiss

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Quartz (possibly milky quartz)

Quartz (Silica; SiO₂)

Peridot and Citrine Gemstones (in a ring setting)

Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)

Portable Ceramic Space Heater

Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements

Limestone (Cliff Formation)

Limestone (predominantly CaCO3 as calcite)

Digital Multimeter (Synthetic Object)

Digital Multimeter (DMM)

Quartz

Quartz (SiO₂)

River Cobble (likely Basalt or Metagraywacke)

Non-specific water-worn lithic fragment

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Geode (partially formed)

Silicon Dioxide (SiO2)

Amber (Butterscotch/Egg Yolk Variety)

Succinite (Approx. C10H16O)

Chert (Common Variety)

Cryptocrystalline Quartz (SiO2)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Selenite

Gypsum (CaSO4·2H2O), specifically the crystalline variety Selenite

Synthetic Wolf Plush (Non-mineral)

Canis lupus similis (Prop material: Polyester & Synthetic fibers)

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Red Jasper

Jasper (a variety of Chalcedony, SiO₂ with iron oxide inclusions)

Diamond (in a jewelry setting)

Cubic Carbon (C)

Banded Sandstone (Wonderstone)

Sandstone with Liesegang Rings (SiO2 with Iron Oxides)

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Diamond (or Cubic Zirconia)

Carbon (C) / Cubic Zirconium Dioxide (ZrO2)

Caliche (also known as hardpan, calcrete, kankar)

Primarily composed of calcium carbonate (CaCO₃), often mixed with other minerals like quartz, clay minerals, and iron oxides.

Quartz (Milky Quartz)

Quartz (SiO2 - Silicon Dioxide)

Sandstone (likely Graywacke or Lithic Sandstone)

Arenite / Wacke (SiO2 based with lithic fragments)

Olivine (Peridot)

Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Diamond (or Diamond Simulant/Cubic Zirconia)

Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)