Man Made Material (Metal)

Boxwork or Septarian Concretion

Septarian nodule / Boxwork weathering

Clear quartz sphere

Quartz (silicon dioxide, SiO₂)

Mounted faceted gemstone ring

Likely diamond (carbon, C), though the image is insufficient for definitive identification

Native silver fragment (probable)

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

Mystic Topaz

Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)

Red cabochon gemstone ring

The stone may be carnelian (orange-red chalcedony, SiO₂); the image is insufficient to identify it reliably.

Obsidian (Blue)

Volcanic Glass (SiO2)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Pink Quartz / Sea Glass

Silicon Dioxide (SiO2)

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

White sea glass (naturally frosted glass fragment)

Man-made silicate glass, typically soda-lime glass; not a mineral or rock

Likely metallic meteorite fragment

Undetermined; possibly an iron meteorite or stony-iron meteorite

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Diamond ring

Diamond (crystalline carbon, C) set in a metal ring; the small stones appear diamond-like but cannot be confirmed from the image.

Green Aura Quartz

Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)

Pyrite

Iron Sulfide (FeS2)

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Polished dendritic agate or jasper

Microcrystalline quartz (SiO₂), likely chalcedony with iron/manganese dendrites

Quartz (likely milky quartz or quartz glass-like fragment)

Quartz, silicon dioxide (SiO₂)

Pearl-and-gemstone insect brooch

Pearl: nacre (aragonite, CaCO₃); colored stones are likely synthetic or natural corundum/spinel/glass, not determinable from the image

Rock crystal quartz fragments

Quartz (silicon dioxide, SiO₂)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite/Goethite inclusions

Slag (Industrial)

N/A (Anthropogenic Slag)

Black tumbled stone, possibly obsidian

Obsidian (volcanic glass; predominantly SiO₂), identification uncertain from image

Fluorite (Polished Point/Tower)

Calcium Fluoride (CaF2)

Tumbled chalcedony pendant (likely agate)

Chalcedony, microcrystalline quartz (SiO₂); the pale bands suggest agate

Sea Glass

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

Clear quartz tumbled stone

Quartz (silicon dioxide, SiO₂)

Iron meteorite fragment

Fe-Ni meteorite, likely an iron meteorite or stony-iron fragment

Blue-dyed tumbled quartz or glass imitation

Quartz (SiO₂), appearance possibly enhanced with blue dye; identity uncertain from image

Sea Glass (Teal/Turquoise)

Amorphous Silica (SiO2) with trace metal oxides

Sea Glass (Turquoise/Aqua)

Amorphous Silica (SiO2) with transition metal dopants

Opalite

Synthetic Opalized Glass

Opalite

Synthetic Opalite Glass (Silicon Dioxide)

Blue topaz-style pendant (stone identity uncertain)

Possibly blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm whether the stone is natural or synthetic

Ferruginous Sandstone (Gozzan)

Iron-rich clastic sedimentary rock with Limonite/Goethite

Pet Rock (Man-made Quartzite or Granite Cobble)

Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica

Green glass cabochon or tumbled stone

Indeterminate; likely man-made glass, possibly aventurine glass rather than a natural mineral

Diamond

Carbon (C)