Metamorphic (Modified)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Blue Quartz (Dumortierite Quartz)

SiO2 with inclusions of AlAl6BSi3O18

Dumortierite Quartz

Dumortierite (Al7BO3(SiO4)3O3 / inclusion in SiO2)

Emerald in Matrix (Quartz/Schist)

Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities

Specular Hematite

Specularite (Fe2O3)

Rhodonite

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

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Orange Calcite (likely polished specimen)

Calcite

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Ruby Fuchsite / Ruby in Fuchsite

Ruby (Al2O3 variety corundum) and Fuchsite (K(Al,Cr)2AlSi3O10(OH)2 - a chromium-rich variety of muscovite mica) in Quartz matrix

Garnet Schist

Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Osumilite in Granite Matrix

(K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30

Green Tourmaline

Elbaite (part of Tourmaline group), Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4

Yellow Sapphire or Citrine

Al2O3 (Corundum) or SiO2 (Quartz)

Sandstone or Quartzite

Arenite (if sedimentary) / Quartzite (if metamorphic)

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)

Quartz on Chlorite Schist

Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)

Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Pyrite (on the right) and Magnetite or Hematite (on the left)

Iron Sulfide (FeS2) and Iron Oxide (Fe3O4 or Fe2O3)

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite mica

Rhodonite

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

Almandine Garnet

Almandine - Fe3Al2(SiO4)3

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Mica (Biotite or Phlogopite variety)

Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)

Fuchsite

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH,F)2 with Cr replacements)

Jade

There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Lapis Lazuli

Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2

Quartzite with Mafic Intrusion (Gneiss/Schist Contact)

Metamorphic Quartzite (SiO2) with Amphibole/Biotite Schist

Jadeite Jade

Jadeite (NaAlSi2O6)

Epidote

Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))

Phyllite

Phyllite (Intermediate grade metamorphic rock)

Jade (likely Jadeite)

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

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite inclusions)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Epidote Water-Worn Pebble

Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Garnet in Matrix

Almandine or Spessartine Garnet in Quartz/Schist Matrix (X3Al2(SiO4)3)

Epidote with quartz/feldspar

Epidote, Ca2(Al,Fe)3(SiO4)3(OH)

Slate

Foliated low-grade metamorphic rock

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr