Metamorphic (Likely Gneiss Or Schist Based On Texture)

Sapphire (Raw/Rough)

Corundum (Al2O3)

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)

Ferruginous Sandstone (with possible trace fossils)

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (Sandstone)

Soapstone / Steatite

Steatite (primarily Talc, Mg3Si4O10(OH)2)

Feldspar-rich Quartzite

Feldspathic Quartzite (Metamorphosed Sandstone)

Ruby (Corundum)

Al2O3 (Aluminium oxide with Chromium impurities)

Nephrite Jade (Hetian Yu)

Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2

Limonite pseudomorph after Pyrite

Goethite/Limonite FeO(OH)·nH2O

Weathered basaltic cobble

Basalt, likely amygdaloidal or vesicular basalt

Chert

Chert (SiO2, Silicon Dioxide)

Jasper with Hematite Inclusions

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Sandstone (Ferruginous)

Arenite (SiO2 based with Fe2O3 banding)

Chert (Flint)

Silicon Dioxide (SiO2)

Basalt (Beach Pebble)

Basalt

Likely quartz-bearing mineral aggregate

Quartz (SiO₂), possibly mixed with mica or feldspar

Milky Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Weathered iron-rich quartzite or ironstone cobble

Quartzite, likely limonite/goethite-stained (SiO₂ with FeO(OH)·nH₂O)

Quartzite

Silicon Dioxide (SiO2)

Quartzite Pebble

Quartzite (SiO2)

Quartzite Pebble (with Iron Staining)

Quartzite (mainly SiO2)

Basalt

Mafic Igneous Rock (composed primarily of pyroxene and calcium-rich plagioclase)

Quartzite

Quartzite (primarily SiO2)

Dark mafic rock, likely basalt

Basalt; primarily plagioclase feldspar and pyroxene, commonly with olivine and iron oxides

Green-and-gold apatite-bearing rock, possibly epidote skarn

Apatite-group mineral, commonly fluorapatite (Ca₅(PO₄)₃F), with probable epidote and quartz; exact identification requires testing

Argillite (with Barnacles)

Argillite (metamorphosed mudstone/shale)

Asphalt (Road Aggregate)

Bituminous Conglomerate / Asphalt Concrete

Granite

Phaneritic Felsic Igneous Rock

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Magnetite with Quartz

Magnetite (Fe3O4)

Quartz-rich breccia or vein quartz fragment

Quartz (SiO₂), likely with iron-oxide staining and attached host rock

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Tumbled green stone, likely serpentine or nephrite jade

Serpentine-group minerals, commonly antigorite/lizardite; possible nephrite, a jade variety of tremolite–actinolite

Muscovite mica

Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Quartzite (with mineral vein)

Metamorphosed Quartz-rich Sandstone (SiO2)

Red Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

Siltstone

Siltstone (primarily SiO2 with Al2O3)

Quartzite

Quartzite (SiO2)