Mineral (Silicate Replaced Organic Material)

Granite (tumbled pebble)

Granite (Plutonic Igneous Rock)

Red Coral

Corallium rubrum (for precious red coral), although other species like Corallium japonicum and Paracorallium are also used.

Man-made Crystal (Lead Glass)

Lead oxide-doped Silica Glass (approx. SiO2 + PbO)

Muscovite Mica

Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Calcite

Calcite (Mineral, Calcium Carbonate - CaCO3)

Pebble (likely Quartzite or Chert)

Clastic Sediment, potentially composed of SiO₂ (Quartz)

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Chert Pebble/Nodule

Chert (a microcrystalline or cryptocrystalline sedimentary form of quartz, SiO2)

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Gneiss

Gneiss (a rock type, not a specific mineral with a formula)

Clear Quartz (or Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Micaceous Sandstone or Quartzite

Sandstone (lithified quartz grains, often with mica) or Quartzite (metamorphosed sandstone)

Granite Pebble

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)

Quartz

Quartz (Silicon Dioxide - SiO2)

Pink Stained Rock (Likely Quartzite or Sandstone with Iron Oxide Staining)

Quartzite (metamorphic) or Sandstone (sedimentary); coloration likely due to hematite or other iron oxides.

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Granite

Granite (a common type of Felsic Intrusive Igneous Rock)

Quartz (likely Jasper or Chert variety)

Quartz (SiO₂)

Sandstone (Pebble/Cobble)

Sandstone (arenite is a more precise term for sandstone with less than 15% matrix; this specimen appears to be a lithic or quartz arenite)

Chert (variant of Flint)

Chert (SiO2)

Quartz

Quartz (SiO₂)

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Quartz

Silicon Dioxide (SiO₂)

Chert (Flint)

Chert (predominantly SiO₂ - silicon dioxide)

Mica (likely Muscovite)

Muscovite / KAl2(AlSi3O10)(OH)2

Granite

Granite (a plutonic rock)

Quartz

Silicon Dioxide (SiO₂)

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Chalcedony (Banded/Mottled Variety)

Chalcedony (a cryptocrystalline variety of Quartz, SiO2)

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.

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Rutilated Quartz

SiO2 (Quartz) with TiO2 (Rutile inclusions)

Quartz (likely Milky Quartz)

Quartz (SiO₂ - Silicon Dioxide)

Lapis Lazuli

A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).

Quartz (River Pebble)

Quartz (SiO₂ - Silicon Dioxide)

Granite (weathered/river-tumbled)

Granite (Plutonic Igneous Rock)

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Red Jasper (beads)

Silicon Dioxide (SiO2) with iron inclusions

Serpentine

Serpentinite (rock), Serpentine group minerals (e.g., Antigorite, Lizardite, Chrysotile)

Zircon

Zircon (ZrSiO4)