Man Made Composite (Lithified Equivalent Of Sedimentary)

River Stone / Siltstone

Siltstone (composed of lithified silt)

Iron-rich banded quartzite / jaspilite

Banded iron formation (BIF), chiefly quartz (SiO₂) and iron oxides (hematite, Fe₂O₃; magnetite, Fe₃O₄)

Dragon Blood Jasper

Epidote-bearing Quartz Microcrystalline Aggregate

Jasper and Mudstone Composite

Silicified Sedimentary Rock / Jasperoid Pebble

Slate

Slate; predominantly fine-grained phyllosilicates (muscovite/illite, chlorite) with quartz and feldspar

Water-worn basalt pebble

Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine

Green Agate

Silicon dioxide (SiO₂)

Sandstone

Sandstone (lithified sand)

Goldstone (aventurine glass)

Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)

Jasper and Chalcedony Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Pebble

Lithified rock fragment / Sedimentary clast

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image

Opalite (a synthetic glass, often confused with Opal)

Silicon dioxide glass (SiO2nH2O, for natural opal)

Conglomeratic gravel / pebble-rich concrete-like rock

Polymictic conglomerate (likely an unconsolidated gravel surface; exact identification uncertain from the image)

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Goldstone (with Tiger's Eye and Quartz)

Aventurine glass (Synthetic SiO2 with Cu inclusions)

Man-made Carved Stone (Scream Mask/Skull motif)

Carved Soapstone or Serpentine-rich rock

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Carved Mottled Greenish-Yellow Crystal/Glass Object

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

Note: Item is a Synthetic/Man-made Object

Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)

Likely limestone or marble fragment

Calcite-rich carbonate rock; CaCO₃

Goldstone (likely red/brown aventurine glass)

Man-made aventurine glass; copper-bearing silicate glass (not a natural mineral)

Dyed or synthetic turquoise-blue glass-like specimen

Likely man-made colored glass or resin; exact identification requires testing

Blue goldstone

Man-made aventurine glass containing metallic copper particles; not a natural mineral

Likely polished quartz or glass-like mineral cabochon

Probably quartz (SiO₂), though the image cannot exclude man-made glass

Pumice or vesicular volcanic tuff

Pumice: highly vesicular volcanic glass, chiefly rhyolitic to dacitic; possible tuff: lithified ash and pumice fragments

Banded Sandstone or Quartzite Pebble

SiO2 (dominant) with impurities

Chalk

Micrite (primarily Calcium Carbonate, CaCO3)

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Possible sea glass (naturally frosted glass), not a confirmed geological specimen

Man-made silicate glass; composition varies, commonly soda-lime glass

Blue glassy mineral specimen, possibly dyed or synthetic

Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass

Pebble

Lithified rock fragment / Sedimentary clast

Graphite

Graphite (Native Carbon, C)

Dark gray shale or slate-like rock

Fine-grained, clay-rich mudrock; exact identification is uncertain from the photo

Mixed river gravel (alluvial conglomeratic sediment)

Polymictic alluvium; composition includes quartz, feldspar, chert, granite, basalt, and metamorphic rock fragments

Black beaded bracelet, likely black onyx or glass

Possibly chalcedony (microcrystalline quartz, SiO₂); the beads may instead be man-made glass

Polymictic breccia, possibly volcanic breccia

Polymictic clastic breccia; likely a matrix-supported breccia containing lithic fragments, quartz, feldspar, and dark mafic minerals

Fossiliferous shale or mudstone with a brachiopod fossil

Likely a spiriferid brachiopod fossil in dark shale/mudstone; exact species and age require locality and examination