Anthropogenic (Man Made Product Subject To Geological Processes)

Peridot

Olivine (specific variety: gem-quality forsterite), (Mg,Fe)2SiO4

Rose Quartz

Rose Quartz (SiO₂)

Green Aventurine

Aventurine (a variety of Quartz, SiO2)

Diamond

Diamond (C)

Quartz (milky variety)

SiO2 (Silicon Dioxide)

Basalt with Weathered Surface

Basalt

Garnet (likely Pyrope or Almandine)

Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.

Diamond

Diamond (Carbon, C)

Jade (Nephrite or Jadeite)

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

Granite

Granite (a plutonic igneous rock)

Sandstone

Sandstone (clastic sedimentary rock)

Bivalve Shell (Fossil or Contemporary)

Class Bivalvie (various genera and species of clams, cockles, etc.)

Fluorite

Fluorite (CaF₂)

Citrine Quartz

Citrine (Silicon Dioxide - SiO2)

Green Calcite

Calcite (CaCO3)

Quartz (likely) or a Quartzite Pebble

Silicon dioxide (SiO2) for quartz. If it's quartzite, it's a metamorphic rock primarily composed of quartz.

Sandstone

Arenite (general term for sandstone)

Banded Gneiss (River Cobble)

Gneiss (a high-grade metamorphic rock)

Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)

Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)

Leopardskin Jasper

Jasper (a variety of microcrystalline Quartz)

Banded Chert

Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)

Muscovite Mica

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

Milky Quartz

Quartz (SiO₂)

Red Jasper (with Quartz Veins)

Jasper (var. chert, SiO₂)

Talc

Talc (Mg₃Si₄O₁₀(OH)₂)

Red Jasper or Chert

Jasper (SiO2, a variety of chalcedony with iron oxide impurities), Chert (SiO2)

Pyrite

Pyrite (Iron Disulfide), FeS2

Amethyst (variety of Quartz)

SiO2 (Silicon Dioxide) with trace iron impurities

Pebble

Clast (specifically a granule or small pebble)

Orthoclase Feldspar (or K-Feldspar)

Orthoclase (KAlSi3O8)

Shale or Slate with Quartz Veins

Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins

Granite

Granite (a felsic intrusive igneous rock)

Quartz

Silicon Dioxide (SiO₂)

Rose Quartz

Rose Quartz (SiO₂)

Bi-Color Tourmaline (or Watermelon Tourmaline)

Tourmaline (complex borosilicate mineral group with general formula AD3G6(BO3)3T6O18(OH,O)4)

Concretion

Various mineral compositions, typically carbonate or iron oxide cemented sediment

Quartz (likely a clear or rock crystal variety)

Quartz (SiO2 - Silicon Dioxide)

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 ).

Ferruginous Sandstone

Sandstone, Iron-rich

Onyx Marble (also commonly called Onyx)

Calcite (CaCO3), often with other mineral impurities

Quartz (Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Granite

Granite (a common name for a felsic intrusive igneous rock)