Sedimentary Or Metamorphic (Low Grade)

Amethyst and Ruby in Zoisite

Silicon Dioxide (SiO2) and Anyolite (Zoisite-Hornblende-Ruby mix)

Chert (specifically Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)

Green Calcite

Calcite (CaCO3)

Lapis Lazuli

Lapis Lazuli (Complex aggregate of Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Pyrite, and Calcite)

Lapis Lazuli

Lapis Lazuli (Complex silicate mixture containing Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Greenstone / Epidosite

Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)

Lapis Lazuli

Lapis Lazuli (Complex aggregate mainly of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Tufa (Vesicular Limestone)

Tufa (form of Calcium Carbonate, CaCO3)

Tufa

Calcareous Tufa (Calcium Carbonate, CaCO3)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Fossiliferous Limestone (Coquina)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Rainbow Fluorite

Fluorite (Calcium Fluoride, CaF2)

Carnelian

Carnelian (SiO2 - Silicon Dioxide with Hematite impurities)

Green Common Opal

Hydrated Silica (SiO2·nH2O)

Pyrite

Iron Sulfide (FeS2)

Chalcedony with Matrix

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite in Shaly Matrix

Iron Sulfide (FeS2)

Yellow Chalcedony

Silicon Dioxide (SiO2)

Schist

Mica Schist (predominantly Muscovite or Biotite)

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Milky Quartz (Common Quartz)

Quartz (Silicon Dioxide, SiO2)

Chert (Flint)

Silicon Dioxide (SiO2)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Green Quartz (Prasiolite variant or Aventurine)

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)

Lapis Lazuli

Lapis Lazuli (Complex silicate mixture)

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Nephrite Jade

Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2

Shale

Lutaceous Sedimentary Rock

Reddish Brown Claystone or Siltstone

Argillite / Siltstone / Claystone

Orange Calcite (likely polished specimen)

Calcite

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Ocean Jasper

Silicon dioxide with impurities (SiO2 + impurities)

Nephrite Jade (or Serpentine)

Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals

Blue Apatite

Apatite (Group), Ca5(PO4)3(F,Cl,OH)

Jade

Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Flesh-toned Siltstone

Siltstone (composed of microscopic Quartz and Feldspar grains)

Siltstone

Siltstone (siliciclastic sedimentary rock)

Quartzite (specifically Pink or Red Quartzite)

Metamorphosed Quartz Sandstone (SiO2)