Man Made Glass (Often Grouped With Minerals In Lapidary)

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with impurities of Hematite or Goethite

Oolitic Chert

Oolitic Microcrystalline Quartz (SiO2)

Biotite Mica

Biotite, K(Mg,Fe)3AlSi3O10(F,OH)2

Red Garnet (Almandine-Pyrope series)

Garnet Group, Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)

Chert (Flint variety)

Chert (Cryptocrystalline variety of Quartz, SiO2)

Cat's Eye Moonstone (Simulated/Synthetic or natural Cat's Eye Quartz/Glass)

There is no single scientific name. The appearance suggests either: Moonstone (feldspar group), Cat's Eye Quartz (SiO2), Apatite (Ca5(PO4)3(F,Cl,OH)), or most likely a synthetic material such as Fiber Optic Glass or 'Opalite' (a type of glass).

Rose Quartz

Silicon dioxide (SiO2)

Fluorite (specifically Blue John or Banded Fluorite)

Calcium Fluoride (CaF2)

Quartz pebble / River stone

SiO2 (Silicon Dioxide)

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

Quartz (Grain/Fragment)

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite with Iron oxide staining (SiO2 with Fe2O3)

Milky Quartz

Silicon Dioxide (SiO2)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing mica)

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Septarian Nodule Segment (Commonly known as Dragon Stone or Lightning Stone)

Septarian Nodule (CaCO3 / Hydrated Calcium Carbonate)

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Chevron Amethyst

Silicon Dioxide (SiO2) with trace Iron impurities

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Botryoidal Goethite

Goethite (α-Fe3+O(OH))

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Goethite)

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Hematite inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Septarian Nodule (Dragon Stone)

Septarian concretion (composition: CaCO3 - Calcite, Aragonite, and Siderite/Limestone)

Septarian (Dragon Stone)

Septarian concretion (Calcite, Aragonite, and Limestone)

Banded Chert

Microcrystalline Quartz (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium, Manganese or Iron

Rose Quartz

Silicon dioxide with traces of titanium, iron, or manganese (SiO2)

Green Jasper (Agate-Jasper mixture)

Silicon Dioxide (SiO2) with impurities

Mixed Quartz and Jasper Pebbles

Silicon Dioxide (SiO2)

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Smoky Quartz

Smoky Quartz (SiO2: Silicon Dioxide)

Sandstone (Red/Brown Variety)

Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)

Chert (variously known as Flint or Microcrystalline Quartz)

Silicon dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Blue Calcite

Calcite (Calcium Carbonate, CaCO3)

Milky Quartz

Silicon Dioxide (SiO2)

Jasper

Silicon dioxide (SiO2) with impurities

Orange Calcite

Calcium Carbonate (CaCO3)

Greenstone

Greenschist / Greenstone (Chlorite-Epidote facies)

Black Sapphire

Corundum (Al2O3 with iron and titanium impurities)