Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz)

Green Aventurine

Quartz variety (SiO2 with inclusions)

Yellow Jasper (Beach Pebble)

Silicon Dioxide (SiO2) with iron hydroxide impurities

Banded Agate (Tumbled)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Rose Quartz (likely carved)

Rose Quartz (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Quartz (Milky or Cloudy variety)

Quartz (Silicon Dioxide, SiO2)

Yellow Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with iron oxide (Limonite/Goethite) inclusions

Petrified Wood

Silicified Wood (SiO2)

Yellow Jasper (Chert)

Silicon Dioxide (SiO2)

Agatized Fossil (Druzy Agate)

Silicon Dioxide (SiO2) replacing organic matter

Yellow Jasper

Silicon Dioxide (SiO2) with impure Iron inclusions

Jasper (Green/Dragon Blood variety)

Silicon Dioxide (SiO2) with iron/clay inclusions

Bumblebee Jasper

Volcanic Tuff (mixture of Quartz, Sulfur, Hematite, and Orpiment)

Jasper

Silicon Dioxide (SiO2)

Jasper

Silicon dioxide (SiO2)

Jasper (Chert)

Silicon Dioxide (SiO2)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Chalcedony (Agate/Jasper mix in host rock)

Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)

Pearl

Calcium Carbonate (CaCO3)

Quartz (Microcrystalline/Chert)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Chert (variant of Flint)

Chert (SiO2)

Jasper (Red and Yellow)

Silicon Dioxide (SiO2) with iron oxide impurities

Jasper (Mookaite style)

Silicon Dioxide (SiO2) with iron and manganese inclusions

African Turquoise

Teal Jasper (Macro-crystalline Quartz/Sio2 + Inclusions of Copper, Iron, and Manganese)

Labradorite

(Ca, Na)(Al, Si)4O8

Dyed Agate Geode

Silicon Dioxide (SiO2) with artificial pigment

Pink Granite

Granite (Phaneritic intrusive igneous rock dominated by Quartz and K-Feldspar)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Jasper with Hematite Inclusions

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Petrified Wood

Silicified Wood (SiO2)

Quartz crystal with Pyrite inclusions

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)