Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
mineral
Category
Mineral, Jewelry
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Learn about Mineral, Jewelry in the encyclopedia
View all →
Carnelian
Chalcedony (SiO2)
mineral
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
gemstone
Cream Quartz Bead
Silicon Dioxide (SiO2)
mineral
Rainbow Hematite / Magnetic Hematite
Iron oxide (Fe2O3) - often synthetic/coated for beads
mineral
Lapis Lazuli
Lazurite-rich metamorphic rock
metamorphic
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Quartz (Citrine or Iron-Stained)
SiO2
mineral
Tree Agate
Silicon dioxide (SiO2)
Mineral
Polished picture jasper heart pendant
Picture jasper (microcrystalline quartz, SiO₂, with iron-oxide and clay inclusions)
sedimentary
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Iron (Hematite variety)
Iron (Fe) / Hematite (Fe2O3)
mineral
Banded Quartz
Silicon Dioxide (SiO2)
mineral
Fossil Shark Tooth
Odontaspididae (Sand Tiger Shark family)
fossil
Malachite
Copper Carbonate Hydroxide, Cu2CO3(OH)2
mineral
Tiger’s-eye bracelet/bead segment
Chatoyant quartz (SiO₂), likely brown tiger’s-eye with iron-oxide alteration
mineral
Polished agate pendant
Agate, a banded variety of microcrystalline quartz (SiO₂)
mineral
Silver (S925)
Native Silver (Ag)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2 + Fe)
mineral
Gold (10K Alloy)
Aurum (Au) with alloying metals (Cu, Ag, Zn)
mineral
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
mineral
Lava Rock (Basaltic Scoria)
Vesicular Basalt
igneous
Fossilized shark tooth
Fossil shark tooth; exact shark species cannot be determined from this image
fossil
Shark Tooth Fossil
Otodus obliquus (or similar prehistoric lamniform shark tooth)
fossil
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Hemimorphite
Hemimorphite (Zn4Si2O7(OH)2·H2O)
mineral
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite), SiO2
mineral
Jade (likely Jadeite or Nephrite)
Jadeite (NaAlSi2O6) or Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
Mineral/Mineraloid
Small pink mineral fragment
Indeterminate; possibly rose quartz or feldspar
mineral
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
mineral
Black Onyx
Cryptocrystalline Chalcedony (SiO2)
mineral
Chrysocolla on Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Pyrite with Quartz
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
mineral
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
mineral
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Fossilized bone or tooth fragment
Mineralized vertebrate bone; exact taxon indeterminate from image
fossil
Diamond
Diamond (Pure Carbon, C)
mineral
Clear quartz crystal (tentative)
Quartz, silicon dioxide (SiO₂)
mineral
Leopard Skin Jasper
Microcrystalline Quartz (SiO2) with mineral impurities
sedimentary
Chrysoprase (green chalcedony), likely rough fragment
Chalcedony, microcrystalline quartz (SiO₂), colored green primarily by nickel-bearing inclusions
mineral