Man Made Object (Metal Alloy)

Bog Iron / Limonite Concretion

Goethite/Limonite mixture (FeO(OH)·nH2O)

Milky Quartz with Mineral Inclusions

Quartz (Silicon Dioxide, SiO2)

Jasper (specifically a banded or dark variety)

Silicon Dioxide (SiO2) with impurities

Rhodonite

Manganese Silicate (Mn, Fe, Mg, Ca)SiO3

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Hematite (beads)

Hematite (Fe₂O₃)

Granite

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

Quartz (Granular Milky Quartz fragment)

Silicon Dioxide (SiO2)

Gold Nugget

Native Gold (Au)

Rhodonite

Rhodonite; (Mn,Fe,Mg,Ca)SiO3

Rhodonite

Rhodonite (MnSiO3)

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

Jade

There are two distinct minerals classified as Jade: Jadeite (Na(Al,Fe3+)Si2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the image showing translucent, somewhat fibrous material, it is likely Nephrite.

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Rutilated Quartz (likely Citrine or Smoky Quartz with Rutile inclusions)

SiO2 with TiO2 inclusions (Quartz with Rutile)

Chrysoprase

Chrysoprase (a variety of Chalcedony, SiO₂)

Jade

There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.

Fancy Jasper

Chalcedony (cryptocrystalline quartz) with inclusions

Brown Jasper

Jasper (a cryptocrystalline variety of Quartz, SiO2)

Chert (variations include Flint/Novaculite)

Chert (formula: SiO2)

Iron Meteorite

Iron-nickel alloy (primarily kamacite and taenite)

Red Sandstone

Arenite (Ferruginous Sandstone)

Gold Nugget

Native Gold (Au)

Sandstone (Pebble)

Sandstone (arenite, arkose, wacke depending on composition)

Iron Meteorite (likely Chondrite or weathered Iron-Nickel)

Meteorite (Fe-Ni alloy & silicates)

Greenstone

Greenschist (composed of actinolite, chlorite, and epidote)

Coral (Precious Coral)

Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).

Serpentinite

Serpentinite (complex of Antigorite, Lizardite, and Chrysotile, Mg3Si2O5(OH)4)

Milky Quartz

Silicon Dioxide (SiO2)

Limonite (Iron Ore)

Hydrous Iron Oxide (goethite, lepidocrocite)

Pyrite

Iron Sulfide (FeS2)

Quartzite

Metamorphic Rock (Mainly SiO2)

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Chert (Nodular Chert)

Microcrystalline Silica (SiO2)

Obsidian

Obsidian (volcanic glass)

Diabase (Greenstone)

Diabase (Dolerite)

African Turquoise (Jasper)

Polychrome African Jasper (often marketed as 'African Turquoise' due to its color, but it is not true turquoise)

Red Jasper

Red Jasper (variety of Chalcedony, SiO₂)

Jade (likely Jadeite)

Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)

Green Aventurine

Aventurine (a variety of Quartz, SiO2 with fuchsite inclusions)