Mineral Based Human Made Alloy

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

Polished orbicular granite (likely larvikite or orbicular diorite)

Quartz/feldspar-bearing granitoid with dark amphibole–biotite minerals; exact variety requires testing

Faceted transparent gemstone pendant

Uncertain from image; likely faceted quartz (SiO₂), cubic zirconia (ZrO₂), or glass imitation

Sea Glass

Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature

Polished rutilated quartz cabochon

Quartz (SiO₂) with rutile inclusions (TiO₂)

Tumbled blue glassy mineral, possibly sodalite or blue aventurine

Identification uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue-dyed quartz/slag-like material

Native silver fragment (probable)

Silver, Ag; possibly silver-bearing sulfide or plated metal

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Sandstone

Sandstone (Quartz-rich Arenite / SiO2)

Tumbled brown chalcedony or jasper

Microcrystalline quartz, SiO₂; possibly iron-bearing jasper

Carved jasper bear figurine

Jasper, microcrystalline quartz (SiO₂), likely brecciated or orbicular jasper

Pearl

Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)

Pyrite Concretion (Grapestone)

Iron Sulfide (FeS2) Concretion

Polished orbicular jasper

Siliceous microcrystalline quartz/chalcedony (SiO₂), commonly with iron-oxide and volcanic inclusions

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Aluminum Slag

Anthropogenic Aluminum (Al)

Lepidolite in Quartz Matrix

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Chert (Flint)

Silicon Dioxide (SiO2)

Blue calcite sphere

Calcite (CaCO₃), commonly blue-calcite variety

Goldstone (aventurine glass)

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

Copper Ore

Native Copper (Cu) often found with Chalcocite (Cu2S) or Bornite (Cu5FeS4)

Green glassy slag (often sold as “sea glass” or “green obsidian”)

Industrial vitreous slag; primarily amorphous silicate glass, composition variable

Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)

Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)

Native Copper

Native Copper (Cu)

Red cabochon gemstone ring (likely ruby or red spinel; identity unconfirmed)

Possibly corundum (ruby, Al₂O₃) or spinel (MgAl₂O₄); visual identification alone cannot distinguish these from glass or synthetic stones.

Dyed druzy quartz geode

Quartz, silicon dioxide (SiO₂), likely artificially dyed

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins

Chert (Yellow Jasper/Flint)

Silicon Dioxide (SiO2)

Tumbled orbicular granite

Granite, predominantly potassium feldspar, plagioclase, quartz, and biotite/hornblende

Decorated turquoise-like bead or mineral pendant

Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper

Polished brecciated jasper pendant

Jasper, an opaque microcrystalline variety of chalcedony (mostly SiO₂), with iron-oxide staining and likely brecciation

Asphalt (Bituminous Concrete)

Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)

Concrete

Anthropogenic Conglomerate

Tumbled serpentinite (serpentine stone)

Serpentinite, dominated by serpentine-group minerals (lizardite, chrysotile, antigorite), commonly with magnetite and chromite

Raw quartz crystal pendant

Quartz (silicon dioxide, SiO₂), likely milky or cloudy quartz

Small metallic-gold mineral fragment, possibly pyrite

Pyrite (FeS₂), if confirmed

Likely weathered iron-rich rock or slag fragment

Uncertain; possibly limonite/goethite-rich material (FeO(OH)·nH₂O)

Tumbled blue stone, likely blue calcite or dyed stone

Probably calcite (CaCO₃); exact identification is uncertain from the blurred image

Unknown dark mineral/rock fragment

Indeterminate; possibly a dark sulfide mineral or slag-like geological fragment

Goldstone and pink quartz bead strands

Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible

Tumbled yellow jasper or chalcedony

Microcrystalline quartz, SiO₂; likely iron-oxide-bearing jasper/chalcedony