Mineral (Variety Of Quartz)

Chert (or Jasper)

Microcrystalline Quartz (SiO2)

Chert (Nodule)

Microcrystalline quartz (SiO2)

Chert Pebble

Chert (composed primarily of Microcrystalline Quartz, SiO2)

Quartz with Iron Oxide

Silicon Dioxide (SiO2) with Fe2O3 inclusions

Banded Agate (specifically sardonyx or carnelian agate variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Banded Agate (specifically Black Sardonyx/Onyx variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Yellow Jasper

Jasper (Silica-rich Microcrystalline Quartz, SiO2 with Iron impurities)

Quartzite

Quartzite (SiO2)

Rough Ruby

Corundum (Al2O3 with Chromium impurities)

Rough Ruby

Corundum (Al2O3 with Chromium impurities)

Ruby (set in a gold pendant)

Ruby (Variety of Corundum, Al2O3)

Milky Quartz with Mineral Inclusions

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz in Matrix (Pegmatite)

Silicon Dioxide (SiO2) with Potassium Feldspar and Biotite mica

Fuchsite

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

Coffee Bean Jasper

Silicon Dioxide (SiO2) with impurities

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Quartzite

Metamorphosed Quartz Sandstone

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartzite

Quartzite (SiO2)

Red Jasper

Microcrystalline Quartz (SiO2 with Iron Oxide impurities)

Yellow Jasper

Silicon dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Orange Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky Quartz vein fragment)

Silicon Dioxide (SiO2)

Red Jasper (with Quartz veining)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Jasper

Jasper (Silicon Dioxide, SiO2)

Milky Quartz with Iron Oxide

Quartz (Silicon Dioxide, SiO2) with Limonite/Goethite staining

Quartz Vein in Host Rock (likely Sandstone or Mudstone)

Silicon Dioxide (SiO2) within Sedimentary Matrix

Pink Quartzite (Water-worn)

Quartzite (SiO2)

Selenite (Satin Spar)

Gypsum (CaSO4·2H2O)

Potassium Feldspar and Quartz

KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in Rhyolitic Matrix

Blue Sapphire and Diamond (Set in Metal)

Corundum (Al2O3) and Diamond (C)

Jasper (Yellow/Brown variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Nodule)

Chert (primarily Microcrystalline Quartz - SiO2)

Jasper Pebble

Tumbled Jasper (Microcrystalline Quartz, SiO2)

Ferruginous Quartzite (Red Chert/Jasper-like)

Metamorphosed Quartzite with Hematite inclusions (SiO2 + Fe2O3)

Specular Hematite

Iron(III) oxide (Fe2O3)

Chert (Brown Variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flinty variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)