Mixed (Igneous, Sedimentary, Metamorphic, And Minerals)

Corundum (Ruby variety)

Aluminium oxide (Al2O3)

Quartz (Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Rainbow Moonstone with Black Tourmaline

White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Schist (Micaceous)

Mica Schist

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Strawberry Quartz (or Hematoid Quartz)

Silicon Dioxide (SiO2) with inclusions of Hematite or Goethite

Schist (Kyanite Schist)

Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)

Red Aventurine

Aventurine Quartz (SiO2 + Hematite/Goethite)

White Jade (Nephrite or Jadeite)

Tremolite-Actinolite series (Nephrite) or NaAlSi2O6 (Jadeite)

Schist (Micaceous Schist)

Mica Schist

Nuummite

Nuummite (intergrowth of orthoamphiboles Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Green Aventurine

SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)

Magnetite (likely in Hematite or Ironstone)

Magnetite (Fe3O4)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Greenstone (Epidote/Chlorite Schist)

Metabasalt (composed primarily of Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH) and Chlorite (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Fluorite

Calcium Fluoride (CaF2)

Botryoidal Pyrite

Iron Sulfide (FeS2)

Smoky Quartz

Smoky Quartz (SiO2)

Rhodonite

Rhodonite (MnSiO3)

Sapphire

Corundum (Al2O3)

Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)

Diorite (Igneous rock, intrusive, intermediate composition)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Citrine Quartz

Silicon Dioxide (SiO2)

Muscovite Mica (with Quartz)

Muscovite (KAl2(AlSi3O10)(OH)2)

Kyanite (in Schist Matrix)

Kyanite (Al2SiO5)

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2)

Jadeite Jade

Jadeite (NaAlSi2O6)

Quartz / Quartz Cluster

Silicon Dioxide (SiO2)

Quartz with Chalcopyrite and Pyrite

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Biotite (Black Mica)

Biotite - K(Mg,Fe)3(AlSi3O10)(OH)2

Almandine Garnet in Matrix

Almandine Garnet (Fe3Al2(SiO4)3) in Schist/Quartz Matrix

Quartz with Mica/Chlorite inclusions

Silicon Dioxide (SiO2) with phyllosilicate inclusions

Citrine

Silicon Dioxide (SiO₂)

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

Garnet (likely Pyrope or Almandine)

Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Moonstone (specifically White Moonstone/Adularia)

Potassium aluminum silicate ((K,Na)AlSi3O8)