Mineral, Variety Of Chalcedony (Microcrystalline Quartz)

Jasper with Hematite Inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Quartz (in matrix)

Quartz (SiO₂)

Greywacke

Lithic wacke (variety of Sandstone)

Red Jasper

Chalcedony (SiO2 with Iron inclusions)

Smoky Quartz

Silicon Dioxide (SiO2)

Red Aventurine (Strawberry Quartz)

Silicon Dioxide (SiO2) with inclusions of Hematite or Goethite

Tiffany Stone

Bertrandite (Be4Si2O7(OH)2) mixed with Fluorite (CaF2), Opal, and Chalcedony

Orbicular Jasper (Ocean Jasper)

Silicon Dioxide (SiO2) with iron and magnesium inclusions

Chalcedony (Botryoidal or Tumbled)

Chalcedony (SiO₂)

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite

Jasper

Silicon dioxide (SiO2) with iron impurities

Amethyst

SiO2 (Silicon Dioxide) - Purple variety of Crystalline Quartz

Chert (often called Flint or Jasper based on color)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Beryl (Emerald Variety)

Beryllium Aluminum Silicate (Be3Al2(SiO3)6)

Chert (specifically Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chalcedony

Chalcedony (SiO2)

Map Jasper (Grey Picasso Jasper)

Silicon Dioxide (SiO2) with impurities

Epidote with Quartz and Feldspar

Ca2(Al2,Fe3+)(SiO4)3(OH) (Epidote complex)

Chalcedony in Host Rock

Chalcedony (SiO2)

Chert (specifically Jasper/Flint pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

BROWN GRANITE (likely 'Tan Brown' or similar)

Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)

Banded Agate

Cryptocrystalline Quartz (SiO2)

Blue Chalcedony

Chalcedony (SiO2)

Chert (often called Flint when dark)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Rough Corundum (likely Sapphire/Zircon-bearing)

Aluminium Oxide (Al2O3)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and mineral impurities

Yellow Jasper (Mookaite style)

Silicon Dioxide (SiO2) with Goethite/Hematite inclusions

Quartz (on matrix)

Quartz (Silicon Dioxide, SiO₂)

Chert (specifically Blue Chert or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Gray/Blue Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Chert (variant Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Banded Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Banded Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Labradorite (Feldspar)

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

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Chert (and/or River Pebble)

Microcrystalline silica (SiO2)

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)