Anthropogenic (Man Made Industrial Deposit)

Sandstone

Sandstone (clastic sedimentary rock)

Quartz with Iron Stains

Quartz (SiO2) with iron oxide/hydroxide staining

Anthracite Coal

Anthracite (Carbon-rich metamorphic rock)

Gold-bearing Quartz

Native Gold (Au) in Quartz (SiO2) matrix

Milky Quartz Mushroom Carving

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite pebble

Quartzite (SiO2)

Rose Quartz

Rose Quartz (SiO₂)

Rutilated Quartz

Quartz (SiO2) with Rutile inclusions (TiO2)

Diamond

Carbon (C)

Raw Diamond (Rough Uncut)

Diamond (C - pure carbon)

Ruby

Corundum (Aluminum Oxide with Chromium traces), Al2O3:Cr

Quartzite River Stone

Quartzite (SiO2)

Desert Rose (Gypsum Variety)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Sandstone

Arenite (composed primarily of SiO2)

Agate / Banded Chalcedony

Agate (Silicon Dioxide / SiO2)

Yellow Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Turquenite (Dyed Howlite)

Dyed Ca2B5SiO9(OH)5 (Calcium Borosilicate Hydroxide)

Diamond (or Cubic Zirconia)

Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ

Blue Agate (Tumbled and Dyed)

Silicon Dioxide (SiO2) with likely organic dyes

Blue Sapphire

Corundum (Al2O3) with iron and titanium impurities

Tourmaline (likely Schorl)

Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4

Quartzite River Stone

Quartzite (primarily SiO2)

Kyawthuite

Kyawthuite (Bi3+Sb5+O4)

Red Vanadinite on Matrix

Vanadinite (Pb5(VO4)3Cl)

Sandstone (Pebble)

Arenite (primarily SiO2)

Banded Agate

Silicon Dioxide (SiO2)

Quartz Pebble (Chalcedony/Agate)

Silicon Dioxide (SiO2)

Diamond

Diamond (C)

Chert (Jasper/Quartzite)

Microcrystalline Silicon Dioxide (SiO2)

Gold-bearing Quartz

Lode Gold in Silicon Dioxide (SiO2)

Rough Corundum (likely Sapphire/Zircon-bearing)

Aluminium Oxide (Al2O3)

Sapphire (Corundum)

Corundum (Al2O3), variety Sapphire

Limonite (Ironstone Concretion)

Limonite (Hydrous ferric oxide mixture, FeO(OH)·nH2O)

Citrine Quartz

Silicon Dioxide (SiO2)

Vanadinite

Vanadinite (Pb5(VO4)3Cl)

Rough Diamond

Diamond (pure Carbon, C)

Corundum (Ruby/Sapphire crystal)

Al2O3 (Aluminum Oxide)

Quartz with Mica inclusion

Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions

Silver (Native Element)

Silver (Ag) in an alloy of 90% Silver and 10% Copper

Wishing Stone (Basalt/Greywacke with Quartz Vein)

Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)