Anthropogenic (Man Made Product Subject To Geological Processes)

Quartzite with Mafic Intrusion (Gneiss/Schist Contact)

Metamorphic Quartzite (SiO2) with Amphibole/Biotite Schist

Chipped Glass/Plastic Fragment

Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic

Likely blue glass or synthetic gemstone jewelry

Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass

Schorl (Black Tourmaline)

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4

Metallic Ornament / Jewelry

N/A - This is an artificial object, not a geological specimen.

Quartzite

Quartzite (SiO2)

Coal (most likely Bituminous or Anthracite)

Coal (primarily composed of carbon with varying amounts of other elements)

Gold (Elemental Metal)

Gold (Au)

Malaysian 50 Sen Coin

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

Blue Sapphire and Diamond (Set in Metal)

Corundum (Al2O3) and Diamond (C)

Hematite

Hematite (Fe2O3)

Blue Goldstone

Aventurine Glass

Quartz

Silicon Dioxide (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Goldstone (Red)

Aventurine Glass

Slag Glass (Cullet)

Amorphous Silica / Glass residue

Note: Item is a Synthetic/Man-made Object

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

Cullet Glass (Man-made Glass Slag)

Amorphous Silica (SiO2) with chemical additives

Marble

Recrystallized Calcite (CaCO3)

Black Tourmaline

Schorl (Na(Fe2+)_{3}Al_{6} (BO_{3})_{3} (Si_{6}O_{18})(OH)_{4})

Fossiliferous Chert (with Brachiopod or Mollusk fragments)

Silicon dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions

Chert (Nodule)

Chert (Alpha-Quartz, SiO2)

Granite

Granite (Felsic Plutonic Rock)

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Blue Tiger's Eye (Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Iron-rich vesicular rock, possibly slag or weathered basalt

Identification uncertain; likely ferruginous basalt/ironstone, with possible anthropogenic iron slag

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Pebble (likely Quartzite or Chert)

Clastic Sediment, potentially composed of SiO₂ (Quartz)

Petrified Wood

Silicified Wood (primarily SiO2)

Sea Glass (Frosted Glass)

Amorphous Silica (SiO2) with various metal oxide impurities

Cardstock (Paper)

Cellulose (C6H10O5)n

Granitic Gneiss

Gneiss (Polymetamorphic Granitic Gneiss)

Granite

Granite (a plutonic rock)

Stainless Steel Spoon

Iron-Chromium Alloy (Fe + Cr + Ni)

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Polished blue-green glassy slag or coated mineral fragment

Most likely man-made colored glass/slag; exact composition cannot be determined visually

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Goldstone (Brown)

Aventurine glass

Goethite

Goethite (α-FeO(OH))

Chert (or Flint)

Chert (cryptocrystalline quartz), SiO2