Mineral (Evaporite)

Strawberry Quartz (Quartz with Hematite inclusions)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Pink Granite

Phaneritic Felsic Igneous Rock

Greenschist (Greenstone)

Chlorite schist (primarily Chlorite-Epidote-Actinolite-Albite)

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Amethyst

SiO2 (Silicon Dioxide with iron impurities)

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium or Manganese

Fuchsite in Quartz

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Quartz (SiO2)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium, Iron, or Manganese

Amethyst Quartz

Silicon Dioxide (SiO2) with iron impurities

Quartz with Schorl inclusions

Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate Hydroxide (Black Tourmaline)

Rose Quartz

Silicon Dioxide (SiO2)

Dyed Blue Agate Slice

Silicon Dioxide (SiO2) with artificial dye

Citrine Quartz

Silicon Dioxide (SiO2)

Copper Ore with Chrysocolla/Malachite

Hydrated copper phyllosilicate (Chrysocolla) / Copper carbonate hydroxide (Malachite)

Amazonite

Microcline (KAlSi3O8) with lead impurities

Beryl (likely Pink/Morganite variety)

Beryllium aluminum silicate (Be3Al2Si6O18)

Zoisite with Ruby

Anyolite (Ca2Al3(SiO4)3(OH) with Al2O3:Cr)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)

Jasper (specifically Red Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Herkimer Diamond

Quartz (SiO2)

Rose Quartz

SiO2 (Silicon Dioxide with trace Titanium, Iron, or Manganese)

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

Quartz / Clear Quartz

Silicon Dioxide (SiO2)

Labradorite

Labradorite (Plagioclase Feldspar Series: (Ca,Na)(Al,Si)4O8)

Yellow Quartz or Citrine

Silicon Dioxide (SiO2)

Chevron Amethyst

Silicon Dioxide (SiO2) with iron impurities and white quartz bands

Amethyst (Chevron Amethyst)

Amethystine Quartz (SiO2)

Amethyst or Smoky Quartz Geode Slice

Crystalline Silicon Dioxide (SiO2) with iron impurities

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Amethyst (Quartz)

Amethyst (SiO2 with iron impurities)

Calcite in Matrix

Calcium Carbonate (CaCO3) on Sedimentary Host Rock

Rose Quartz

Silicon dioxide (SiO2)

Schorl (Black Tourmaline) in Quartz/Feldspar Matrix

NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Poppy Jasper

Silicon Dioxide (SiO2) with Hematite and Iron Oxide inclusions

Nuummite

Nuummite (mixture of Anthophyllite and Gedrite)

Chevron Amethyst

Silicon Dioxide (SiO2) with iron impurities

Amethyst

Amethyst (Silicon Dioxide, SiO2 with Iron impurities)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Citrine

Silicon Dioxide (SiO2)

Amethyst

Amethyst (Silicon Dioxide - SiO2 with impurities of iron)

Clear Quartz

Silicon Dioxide (SiO2)