Mineral (Man Made Glass, Not Natural)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Banded agate pendant (likely carnelian or brown-and-white chalcedony agate)

Agate, a banded variety of chalcedony; microcrystalline quartz, SiO₂, with iron-oxide coloration

Porcelain (Stoneware Ceramic)

Mullite / Silica-glass composite (Al6Si2O13)

Amber cabochon pendant

Amber (fossilized plant resin), chiefly polymerized diterpenoid resin

Chert / River Pebble

Microcrystalline Quartz (SiO2)

Small metallic-looking mineral/rock fragment

Indeterminate from image; possibly galena, hematite, or metallic slag

Paving-concrete aggregate with a rounded stone

Polymictic gravel aggregate; the central clast appears to be weathered sandstone or volcanic rock

Chert (Honey Chert / Flint)

Silicon Dioxide (SiO2)

Asphalt Pavement (with aggregate)

Asphalt concrete

Jade bangle

Likely nephrite jade (actinolite–tremolite amphibole); possibly jadeite

Obsidian

Volcanic Glass (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Carnelian cabochon

Orange-red variety of chalcedony (microcrystalline quartz), SiO₂

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Blue Sapphire (likely costume glass imitation)

Corundum (Al2O3) with iron/titanium impurities

Mixed quartz gemstone bead bracelet

Quartz, silicon dioxide (SiO₂), in varieties including smoky quartz, amethyst, rutilated quartz, and possibly tourmalinated quartz

Yellow Quartz (or Citrine Quartz)

Silicon Dioxide (SiO2)

Colorless faceted gemstone (likely glass or cubic zirconia)

Likely cubic zirconia, ZrO₂; exact identification is uncertain from the photograph

Granite

Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Precious Coral (Red Coral)

Corallium rubrum (Calcium Carbonate, CaCO3)

Blue-and-white opalite sphere

Opalite (commercial synthetic or glass-based imitation; not true opal), typically silica glass or synthetic opalescent material

Diamond

Carbon (C)

Polished/tumbled brown-and-white mineral fragment

Indeterminate; possibly quartz-rich jasper, brecciated jasper, or an iron-stained quartz mineral

Diamond

C (Native Carbon)

Small colored gemstone or glass cabochons (uncertain)

Not identifiable from the image; the pieces may be colored glass or synthetic stones rather than natural minerals.

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Cullet Glass (Strawberry Glass)

Amorphous Silicon Dioxide (SiO2) with metallic dopants

Coquina

Biogenic Limestone (CaCO3)

Sandstone

Arenite (SiO2 based)

Ornamental ring with likely blue sapphire and diamonds

Blue corundum (sapphire), Al₂O₃; surrounding stones appear diamond, C, set in gold-colored metal

Pink quartz (likely rose quartz)

Quartz, silicon dioxide (SiO₂), likely rose quartz; possibly lab-created or treated

Pumice

Vesicular volcanic rock, primarily silica-rich volcanic glass (commonly rhyolitic or dacitic)

Sandstone

Arenite (SiO2 primarily)

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Raw Citrine Quartz

Silicon Dioxide (SiO2)

Mixed stone-bead bracelet, likely agate/jasper and possibly sodalite or dyed quartz

Primarily microcrystalline quartz (SiO₂) varieties, with opaque iron-rich chalcedony/jasper and probable blue sodalite or dyed material

Green sea glass or green glass-like tumbled material

Amorphous silicate glass; likely anthropogenic soda-lime glass, not a natural mineral

Sandstone

Arenite (composed primarily of SiO2)

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

Chert

Silicon dioxide (SiO2)

Snowflake Obsidian

Volcanic glass with Cristobalite inclusions (70–75% SiO2)

Citrine Quartz

Silicon Dioxide (SiO2) with trace Iron impurities