Man Made Material (Simulated Mineral)

Diamond

Diamond (Pure Carbon, C)

Greenstone

Metamorphic mafic rock (chlorite-actinolite-epidote schist)

Diamond

Diamond (pure Carbon, C)

Polished blue chalcedony (possibly agate)

Microcrystalline quartz, SiO₂; chalcedony, potentially banded agate

Likely iron-rich rock or weathered metallic mineral fragment

Uncertain; possibly limonite/goethite or iron-bearing slag

Polished jasper pebble

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with possible iron-oxide and other mineral inclusions

Rhodonite

Rhodonite, (Mn,Fe,Mg,Ca)SiO₃

Polished blue stone, likely sodalite or dyed agate

Sodalite: Na₈(Al₆Si₆O₂₄)Cl₂; exact identification requires testing

Carved serpentine pendant

Serpentine-group minerals, commonly antigorite/lizardite (Mg₃Si₂O₅(OH)₄), possibly mixed with chlorite or other inclusions

Tumbled brown chalcedony or jasper

Microcrystalline quartz, SiO₂; possibly iron-bearing jasper

Polished blue gemstone bead bracelet, likely aquamarine

Aquamarine, blue variety of beryl (Be₃Al₂Si₆O₁₈); identification from the image is uncertain

Red/orange coral beads (likely dyed or treated coral)

Corallium spp.; calcium carbonate, mainly calcite (CaCO₃)

Diamond

Diamond (pure Carbon, C)

Diamond (in Jewelry)

Carbon (C)

Blue Goldstone

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

Gemstone cocktail ring, likely jade and quartz or glass beads

Possible jadeite (NaAlSi₂O₆) or nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂); the peach-colored beads cannot be reliably identified from the image

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

Quartz, silicon dioxide (SiO₂)

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Slate

Metamorphic Pelitic Rock

Polished rutilated quartz cabochon

Quartz (SiO₂) with rutile inclusions (TiO₂)

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Clay Brick

Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)

Pearl and Garnet Glass

Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass

Raw Diamond

Carbon (C)

Sandstone

Sedimentary Rock (Quartz Sandstone)

Tumbled chalcedony or quartz pebble

Microcrystalline quartz (SiO₂), likely orange chalcedony/carnelian

Graphite

Graphite (Carbon, C)

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

Orange glassy slag (industrial by-product)

Iron-rich silicate glass; composition varies, commonly Fe–Ca–Al silicate

Diamond

Carbon (C)

Botryoidal chalcedony with iron-oxide staining

Microcrystalline quartz (SiO₂), likely iron-oxide-bearing chalcedony

Polished, carved gemstone (possibly dyed agate or glass-like material)

Unconfirmed from the image; no specific mineral can be identified reliably

Black-and-white agate geode pendant

Agate (microcrystalline quartz, SiO₂), likely a hollow geode slice with chalcedony and drusy quartz

Fossilized coral with attached shell

Likely fossil coral (Scleractinia or Tabulata), with a bivalve or gastropod shell; exact identification requires microscopy

Diamond

Native Carbon (C)

Sandstone

Arenite (composed primarily of SiO2)

Coquina

Bioclastic Limestone

Chert

Silicon dioxide (SiO2)

Fossilized gastropod (likely nerite or related sea snail)

Gastropoda; shell composed originally of aragonite/calcite, commonly replaced or infilled by calcite

Jasper (Iron-rich Chalcedony)

Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)

Sandstone

Arenite (composed primarily of SiO2)

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

Industrial vitreous slag; primarily amorphous silicate glass, composition variable