Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)

Gneiss (specifically a Banded Gneiss pebble)

Gneiss (High-grade Regional Metamorphic Rock)

Quartz

Silicon Dioxide (SiO2)

Amethyst Geode/Cluster

Quartz (SiO2) - variety Amethyst

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.

Quartz Vein in Host Rock (Pebble)

Quartz (SiO2) with sandstone or siltstone matrix

Pyrite

Pyrite (Iron Disulfide), FeS2

Amphibolite

Amphibolite

Garnet (likely Almandine or Pyrope)

Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)

Banded Iron Formation (BIF)

Banded Iron Formation

Banded Gneiss

Gneiss (variable mineral composition)

Banded Agate (likely Carnelian Agate or Sardonyx)

Agate is a common name for a microcrystalline variety of Quartz (SiO₂), specifically a form of Chalcedony.

Red Chalcedony (likely dyed)

Chalcedony (a variety of Quartz), SiO2

Quartz (likely)

Quartz (SiO2 - Silicon Dioxide)

Calcite

Calcite (CaCO₃)

Hematite

Hematite (Fe2O3)

Green Aventurine (likely)

Silicon dioxide (SiO2) with fuchsitemica inclusions

Marble

Marbles are primarily composed of calcite (calcium carbonate, CaCO3) or dolomite (calcium magnesium carbonate, CaMg(CO3)2).

Gold (Processed)

Gold (Au)

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Rose Quartz

Quartz (SiO2) with trace elements of titanium, iron, or manganese

Aquamarine and clear quartz

Aquamarine (Be3Al2Si6O18), Quartz (SiO2)

Quartz Geode (with Agate banding)

Silicon Dioxide (SiO2)

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

Serpentine Schist with Quartz Vein

Serpentine Schist (a type of Metamorphic rock). The white band is likely Quartz (SiO2).

Gneiss

Gneiss (a type of metamorphic rock)

Crazy Lace Agate

Silicon dioxide (SiO2) - a variety of banded Chalcedony (cryptocrystalline quartz)

White Quartz

Quartz (SiO2)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Lapis Lazuli

Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Quartz

Silicon Dioxide (SiO₂)

Sunstone and Green Aventurine

Sunstone: (Ca,Na)[(Al,Si)2Si2O8] (Plagioclase Feldspar Group); Green Aventurine: SiO2 (Quartz)

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Turquoise

Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)

Diamond

Diamond (Carbon, C)

Strawberry Quartz

Silicon Dioxide (SiO2) with inclusions of Goethite or Hematite

Clay (as a rock-forming material)

Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)

Chert (Jasper-like)

SiO2 (Cryptocrystalline Quartz)

Quartz Geode

Silicon Dioxide (SiO2) in a Geode body

Quartz Geode (likely within Limestone or Dolomite matrix)

Quartz (SiO₂)

Amethyst

Amethyst (SiO₂)

Quartz (likely a weathered/tumbled piece)

Quartz (SiO₂)