Mineral (Gemstone Variety Of Beryl)

Fluorite (likely Fluorite on Quartz/Matrix)

Calcium Fluoride (CaF2)

Schist

Mica Schist

Sandstone (Graywacke)

Clastic Sedimentary Rock (Lithic Sandstone)

Sandstone

Arenite (composed primarily of SiO2)

Banded Gneiss (Variety of Gneiss)

Gneiss (specifically, a variety exhibiting prominent banding; mineral composition can vary, but often contains quartz, feldspar, mica, and amphibole)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Turquoise

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

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Charoite

Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O

Banded Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Nodular Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chrysocolla

Chrysocolla; (Cu,Al)2H2Si2O5(OH)4·nH2O

Red Jasper

SiO2 (Silicon Dioxide with Iron Oxide inclusions)

Agatized Chert / Chalcedony

Silicon Dioxide (SiO2)

Turquoise in Matrix

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

Howlite

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Sunstone

Oligoclase or Andesine (Plagioclase Feldspar) - (Ca, Na)((Al, Si)2Si2O8)

Chrysocolla

Chrysocolla, (Cu, Al)2H2Si2O5(OH)4·nH2O

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Basalt with Epidote Veining

Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)

African Turquoise

African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Tiger's Eye

Silica (Quartz) pseudomorph after Crocidolite (SiO2)

Chert (Yellow or Tan variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (Chalky/Gray Variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Chert (Honey Chert or Chalcedony Pebble)

Cryptocrystalline Quartz (SiO2)

Puddingstone (Jasper-Conglomerate)

Conglomerate (Silicon Dioxide, SiO2 with impurities)

Quartz (Milky or Iron-stained)

Quartz (Silicon Dioxide, SiO2)

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

Yellow Jasper / Chert

Silicon Dioxide (SiO2) with Goethite or Limonite inclusions

Grey Jasper (Tumbled Quartz variant)

Jasper (Silicon Dioxide, SiO2)

Jasper (Green/Yellow Moss Jasper)

Silicon Dioxide (SiO2)

Iolite (Cordierite)

Cordierite (Magnesium iron aluminum cyclosilicate), Mg2Al4Si5O18

Milky Quartz

Silicon Dioxide (SiO2)

Green Aventurine

Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Nuummite

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

Jasper with Quartz Vein

Silicon Dioxide (SiO2) with impurities