Man Made Object (Coin)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Jasper, Agate, Quartz Mix (Polished Beads)

SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)

Chert (varieties include Flint or Jasper)

Chert (cryptocrystalline quartz; SiO₂)

Agate

Agate (Cryptocrystalline Variety of Quartz, SiO2)

Agate

Agate (a cryptocrystalline variety of Quartz, SiO₂)

Quartz (River-worn Pebble)

Quartz (SiO2)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Brown Jasper (Likely)

Jasper (Cryptocrystalline Silicon Dioxide - SiO2)

Included Quartz Beads (likely Phantom Quartz or Garden Quartz)

Quartz (SiO2) with various mineral inclusions

Rose Quartz

Quartz (SiO₂), specifically a variety of Quartz

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

Serpentine

Serpentine group minerals (e.g., Antigorite, Chrysotile, Lizardite). Chemical formula: (Mg, Fe)₃Si₂O₅(OH)₄

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Puddingstone (Jasper Conglomerate)

Conglomerate (specific type: Jasper Conglomerate or Hertfordshire Puddingstone)

Agate

Agate (a variety of Chalcedony, SiO2)

Chert / Flint

Chert (varietal name for microcrystalline quartz). Chemical formula: SiO₂

Fossil Coral

Fossilized Scleractinia or Tabulata (various genera/species)

Clay (as a rock-forming material)

Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)

Banded Agate (likely Carnelian Agate or Sardonyx)

Agate is a common name for a microcrystalline variety of Quartz (SiO₂), specifically a form of Chalcedony.

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Asphalt

Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)

Blue Lace Agate

Chalcedony (a form of Quartz) - SiO2

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Quartz

Silicon Dioxide (SiO2)

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2 - a variety of actinolite, an amphibole mineral); Jadeite (Na(Al,Fe3+)Si2O6 - a pyroxene mineral)

African Turquoise (Jasper)

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

Bloodstone / Heliotrope

Silicon dioxide (SiO2) with inclusions

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Rose Quartz

Rose Quartz (SiO₂)

Aventurine (likely Green Aventurine)

Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)

Jasper (yellow/cream variety)

SiO₂ (Cryptocrystalline Quartz)

Obsidian

Volcanic glass

Amethyst

SiO2 (Silicon Dioxide) - a variety of Quartz

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Blue Chalcedony and Picture Jasper Beads

Blue Chalcedony (SiO2), Picture Jasper (SiO2)

Fuchsite

Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)

Chalcedony

Chalcedony (SiO₂)

Tektite (likely Australite)

Tektite (no specific chemical formula as it's a natural glass of variable composition, mostly SiO2, Al2O3, FeO, MgO, CaO, K2O, Na2O, TiO2)

K2 Jasper (Beads)

Granodiorite with Azurite and Malachite