Organic (If Resin) Or Synthetic (If Glass); Simulating Sedimentary Or Metamorphic (For Natural Stones)

Almandine Garnet in Matrix

Almandine (Fe3Al2(SiO4)3)

Agate (specifically, a slice of a Blue Lace or Chalcedony Agate nodule)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Granite

Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)

Blue Goldstone

Auraventurine (Synthetic glass with cobalt and copper inclusions)

Quartz River Pebble

Quartz (Silicon Dioxide, SiO2)

Chert (Septarian Nodules / Weathered Silex)

Microcrystalline Quartz (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Chalcedony (specifically Agate or Flint)

Silicon Dioxide (SiO₂)

Sedimentary Breccia

Breccia (Clastic Sedimentary Rock)

Agate (specifically Chalcedony/Banded Agate)

Silicon Dioxide (SiO2)

Ruby (Corundum)

Aluminum Oxide (Al2O3) with Chromium traces

Milky Quartz with Matrix

Quartz (Silicon Dioxide, SiO2)

Lepidolite (likely)

K(Li,Al)3(Al,Si)4O10(F,OH)2 (Phyllosilicate mineral, part of the mica group)

Pyrite Geode

Iron Disulfide (FeS2)

Sandstone (with possibly iron oxides and other minerals)

Sandstone

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Diamond in Kimberlite

Diamond (C in Kimberlite Matrix)

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Serpentinite

Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)

Ironstone Concretion (likely)

Goethite/Hematite/Limonite cemented sediment

Limestone (Cliff Formation)

Limestone (predominantly CaCO3 as calcite)

Shale

Mudstone (composed primarily of clay minerals like kaolinite, illite, and smectite, with quartz and calcite)

Marble

Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)

Pyrite

Iron Pyrite (FeS₂)

Garnet (Almandine variety)

Almandine, Fe3Al2(SiO4)3

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide with Iron Oxide (SiO2 with traces of Fe2O3/FeO(OH))

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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.

Turquoise

Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

Jasper

Chert (Silica: SiO2)

Garnet (Almandine/Pyrope)

Silicate Mineral (Group: X3Y2(SiO4)3 where X=Mg, Fe, Mn and Y=Al, Fe, Cr)

Chalcedony (Banded/Mottled Variety)

Chalcedony (a cryptocrystalline variety of Quartz, SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

Limestone (Concretionary or Tufa)

Calcium Carbonate (CaCO3)

Sandstone with trace fossil

Sandstone, possibly with Skolithos or similar trace fossil

Yellow Quartz (Citrine Quartz variety / Ferruginous Quartz)

Silicon Dioxide (SiO2) with iron inclusions

Petrified Wood (Silicified Wood)

Silicified Wood / Silicon Dioxide (SiO2)

Garnet Schist

Almandine-Garnet Mica Schist

Ruby and Diamond Heart Pendant

Corundum (Al2O3) and Diamond (C)