Metamorphic And Sedimentary

Mica Schist

Mica Schist (Intermediate-grade Metamorphic Rock)

Slate

Slate (Low-grade foliated metamorphic rock)

Lapis Lazuli

Lazurite-dominant Metamorphic Rock (complex aluminosilicate)

River Pebble (Likely Quartzite or Chalcedony)

Silicon Dioxide (SiO2) - granular metamorphic variety

Quartzite with Quartz Geode / Vug

Crystalline Silicon Dioxide (SiO2) in Metamorphic Host

Quartz Vein in Host Rock (Gneiss/Schist)

Silicon Dioxide (SiO2) within a metamorphic matrix

Pink Quartzite Pebble

Metamorphic Quartzite (SiO2 with iron oxide inclusions)

Banded Gneiss (River Cobble)

Gneiss (High-grade regional metamorphic rock)

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.

White Marble

Recrystallized Calcite (CaCO3)

Schist (Micaceous Schist)

Micaceous schist (Mainly Muscovite/Biotite mixed with Quartz)

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Epidote

Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Jadeite and Nephrite (Jade)

Sodium Aluminum Silicate (Jadeite) / Calcium Magnesium Iron Silicate (Nephrite)

Marble

Metamorphosed Limestone (mainly CaCO3)

Marble

Recrystallized Calcite (CaCO3)

Greenstone

Greenschist / Greenstone (contains epidote, chlorite, and actinolite)

Pink Marble or Rose Quartz (Likely Pink Marble based on carving texture)

Recrystallized Calcite (CaCO3)

Marble

Recrystallized Calcite (CaCO3)

Greenschist

Greenschist (Chlorite Schist)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Smoky Quartz (Polished)

Silicon Dioxide (SiO2)

Mixed Gemstone Collection

SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite

Serpentinite

Serpentine rock (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4

Smoky Quartz

Silicon Dioxide (SiO2)

Aquamarine

Beryl (Be3Al2Si6O18)

Serpentinite

Serpentinite (group of hydrous magnesium iron phyllosilicates)

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz Mineral

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Blue Quartz (Dumortierite Quartz)

Silicon Dioxide with Aluminum Borosilicate (SiO2 + AlAl6BSi3O18)

Citrine

Crystalline Quartz (SiO2) with iron impurities

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Citrine

Citrine (Silicon Dioxide - SiO2)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Sunstone

Oligoclase (Feldspar variety), (Na,Ca)(Si,Al)4O8

Smoky Quartz

SiO2 (Silicon Dioxide)

Peach Moonstone

Potassium Aluminum Silicate, KAlSi3O8