Organic Gemstone (Not A Rock Or Mineral In The Traditional Sense, But Bio Mineralized Material)

Emerald

Beryl (Be3Al2Si6O18 with chromium and vanadium impurities)

Petrified Wood

Silicified Wood (primarily SiO2)

Petrified Wood

Silicified Wood (primarily Quartz/SiO2)

Polished quartz vein in iron-stained host rock

Quartz (SiO₂), likely with limonite/goethite and possible feldspathic or chalcedonic matrix

Bivalve Fossil in Sedimentary Matrix

Fossiliferous Mudstone (Class: Bivalvia)

Fossiliferous Limestone / Petrifaction

Sedimentary rock with fossil inclusions / Calcium Carbonate (CaCO3)

Copper-bearing altered rock, likely chrysocolla-bearing quartzite or breccia

Quartz (SiO₂) with copper silicate minerals, chiefly chrysocolla [approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O], and iron oxides

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)

Amber

Succinite / Fossilized Resin (C10H16O)

Witch Stone (Hag Stone)

Perforated Sedimentary Rock (Typically Sandstone or Limestone)

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Chert (Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)

Iron-rich breccia (likely hematite–goethite breccia)

Hematite (Fe₂O₃) and goethite (FeO(OH)) in a silicified or iron-cemented breccia

Weathered, veined rock fragment (likely granite or gneiss)

Probable granitic gneiss; quartz–feldspar–mica assemblage

Rounded basalt cobble

Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine

Weathered quartz-bearing rock fragments

Likely quartz (SiO₂) in a weathered iron-stained host rock; exact identification is uncertain from the image

Fossilized Bone

Permineralized Vertebrate Bone

Diamond (Martapura/Borneo Diamond)

Carbon (C) - Diamond

Petrified Wood

Silicified Wood (primarily SiO2 - Silicon Dioxide / Chalcedony)

Quartz-rich druse specimen

Quartz, silicon dioxide (SiO₂), likely with iron-oxide staining and minor feldspar or mica

Orange Calcite

Calcium Carbonate (CaCO3)

Limonite (Iron-rich Siltstone / Sandstone base)

Hydrous ferric oxide mixture (FeO(OH)·nH2O)

Possible fossilized shell or coral fragment

Indeterminate biogenic carbonate, likely calcite (CaCO₃)

Dinosaur Fossil Tooth

Vertebrate Fossilized Tooth

Amber

Succinite (specifically Baltic Amber) - Formula: C10H16O (approximate)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Tumbled turquoise (probable)

Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O

Weathered quartz-bearing rock, possibly granitic gneiss

Quartz–feldspar–mica aggregate; exact identification requires testing

Bivalve Fossil (Fossilized Shell)

Class Bivalvia (fossilized in Calcium Carbonate/Aragonite)

Jasper

Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)

Fossilized Bone Fragment

Permineralized Vertebrate Fossil (Hydroxyapatite replaced by Minerals)

Clear Quartz

Silicon Dioxide (SiO2)

Tumbled Clear Quartz

Silicon Dioxide (SiO2)

Polished green stone, likely nephrite jade

Nephrite, an interlocking tremolite–actinolite amphibole aggregate (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)

Geode (unopened)

Chert / Chalcedony Geode (SiO2)

Amber

Succinite (C10H16O)

Fossil shark tooth in limestone

Selachii indet.; calcitic fossil embedded in carbonate rock

Chert (often called Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Amber (Raw)

Succinite (Fossilized Resin)

Tumbled Ruby

Corundum (Al2O3)

Iron-rich basalt or weathered ironstone

Basalt, likely variolitic/vesicular and coated with iron oxides; composition mainly plagioclase, pyroxene, and magnetite/hematite

Aquamarine

Beryl (Be3Al2Si6O18)