Mineral (Processed Alloy)

Chalcedony (Yellow Agate)

Cryptocrystalline Quartz (SiO2)

Bornite (Peacock Ore) / Acid-treated Chalcopyrite

Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2)

Mixed Quartz and River Pebbles (Stone Collection)

Mixed assortment containing mainly Silicon Dioxide (SiO2)

Tumbled yellow jasper

Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides

Polished agate (likely moss or plume agate)

Microcrystalline quartz (SiO₂), chalcedony variety; exact variety is uncertain from the photo

Milky quartz fragment

Quartz, silicon dioxide (SiO₂)

Diamond in Gold Setting

Diamond (C - pure carbon)

Likely tumbled pale-green mineral specimen

Indeterminate; possibly serpentine, calcite, or pale jade/nephrite

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Tumbled green-yellow chalcedony (likely prehnite or serpentine)

Cryptocrystalline quartz (chalcedony), SiO₂; identification is uncertain from the photograph

Green aventurine bead bracelet

Quartz (SiO₂), likely fuchsite-bearing aventurine

Tumbled pale chalcedony (likely quartz)

Microcrystalline quartz, SiO₂; possibly pale agate or quartz

Biotite Granite

Phaneritic Felsic Igneous Rock

Pallasite Meteorite

Pallasite (ST-class)

Ironstone concretion

Siderite or Limonite-rich Concretion (FeO(OH)·nH2O)

Malaysian 50 Sen Coin

Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Unknown metallic sulfide-bearing rock, possibly chalcopyrite or bornite

Tentative: chalcopyrite (CuFeS₂) or bornite (Cu₅FeS₄)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Polished ocean jasper / orbicular jasper

Microcrystalline quartz (SiO₂), commonly with chalcedony, feldspar, and iron/manganese oxides

Vanadinite

Lead Chlorovanadate - Pb5(VO4)3Cl

Quartz Sand (Beach Sand)

Silicon Dioxide (SiO2)

Native Copper

Native Copper (Cu)

Chrysocolla-bearing copper ore

Primarily chrysocolla, a hydrated copper silicate (approx. Cu₂−xAlx(H₂−xSi₂O₅)(OH)₄·nH₂O); exact identification is uncertain from the image.

Quartz Pebble

Silicon Dioxide (SiO2)

Mixed rock and mineral collection

Multiple specimens; visible pieces may include quartz, calcite, agate/chalcedony, jasper, and dyed or coated materials

Obsidian (likely black volcanic glass)

Obsidian; primarily amorphous volcanic silica glass, approximately SiO₂-rich rhyolitic composition

Polished dendritic agate or jasper

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions

Tumbled or broken translucent quartz-like fragment

Quartz (silicon dioxide, SiO₂), possibly chalcedony or calcite

Orbicular jasper (likely ocean jasper)

Silica-rich jasper, predominantly microcrystalline quartz (SiO₂), with iron-oxide and volcanic/mineral inclusions

Copper Ore

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

Copper Nugget

Native Copper (Cu)

Tumbled carnelian (likely)

Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored variety

Tumbled blue glassy mineral, possibly sodalite or blue aventurine

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

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Vanadinite

Pb5(VO4)3Cl

Iron-oxide-stained sulfide-bearing rock, possibly pyrite-bearing schist

Likely quartz–mica schist or massive sulfide rock with pyrite (FeS₂) and limonite/goethite (FeO(OH)·nH₂O)

Likely hematite-rich ironstone or metallic mineral fragment

Hematite (Fe₂O₃), possibly with magnetite (Fe₃O₄) or metallic iron

Milky Quartz

Silicon Dioxide (SiO2)

Likely polished agate or jasper

Microcrystalline quartz (SiO₂); exact variety cannot be determined from this photograph

Copper-bearing rock, possibly native copper in a weathered matrix

Likely copper minerals such as malachite (Cu₂CO₃(OH)₂) in an iron-rich host; exact identification is uncertain from the image

Shale with Quartz Veins

Fissile Sedimentary Rock (SiO2)