Rock Identifier

Category

Synthetic Polymer (Polylactic Acid)

Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.

Learn about Synthetic Polymer (Polylactic Acid) in the encyclopedia

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zincite

Opalite

Lead Feldspar

Dolomite

Zircon

Orange Calcite

Ruby (faceted gemstone) (Corundum (Al2O3 with Cr impurities)) — gemstone

Ruby (faceted gemstone)

Corundum (Al2O3 with Cr impurities)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Ruby (Rough/Raw) (Corundum (Al2O3:Cr)) — mineral

Ruby (Rough/Raw)

Corundum (Al2O3:Cr)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Strawberry Quartz (or Sunstone / Tumbled Quartz) (Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions) — mineral

Strawberry Quartz (or Sunstone / Tumbled Quartz)

Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions

Rough White Zircon (Zircon (Zirconium Silicate, ZrSiO4)) — mineral

Rough White Zircon

Zircon (Zirconium Silicate, ZrSiO4)

Ruby (Corundum (Aluminum Oxide with Chromium), Al2O3:Cr) — mineral

Ruby

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Diamond (in jewelry) (Cubic Carbon (C)) — mineral

Diamond (in jewelry)

Cubic Carbon (C)

Goldstone (Brown) (Aventurine glass) — mineraloid (man-made)

Goldstone (Brown)

Aventurine glass

mineraloid (man-made)

Blue-green turquoise (probable) (Turquoise, hydrous copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O) — mineral

Blue-green turquoise (probable)

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

Polished amber (likely copal or amber) (Amber: fossilized plant resin, chiefly polymerized diterpenes; copal is younger, partially polymerized resin) — gemstone

Polished amber (likely copal or amber)

Amber: fossilized plant resin, chiefly polymerized diterpenes; copal is younger, partially polymerized resin

Aquamarine in Onyx / Blue Topaz Pendant (Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)) — gemstone

Aquamarine in Onyx / Blue Topaz Pendant

Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)

Diamond (Baguette cut) (Carbon (C)) — gemstone

Diamond (Baguette cut)

Carbon (C)

Ruby (Corundum) (Aluminum oxide (Al2O3) with Chromium traces) — mineral

Ruby (Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Ruby (varieties of Corundum) (Aluminum oxide (Al2O3) with Chromium traces) — mineral

Ruby (varieties of Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Cubic Zirconia (Diamond Simulant) (Zirconium Dioxide (ZrO2)) — gemstone

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Diamond (or Diamond Simulant) (Carbon (C) if diamond, various if simulant) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant

Cubic Zirconia (Zirconium Dioxide (ZrO2)) — mineral

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Chrysocolla in Malachite (Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)) — mineral

Chrysocolla in Malachite

Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)

Blue Agate Geode (Dyed) (Cryptocrystalline Quartz (SiO2)) — mineral

Blue Agate Geode (Dyed)

Cryptocrystalline Quartz (SiO2)

Emerald (Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium) — gemstone

Emerald

Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

Agate (Polished Sphere) (Silicon Dioxide (SiO2)) — mineral

Agate (Polished Sphere)

Silicon Dioxide (SiO2)

Goldstone (Synthetic Aventurescence Glass) (Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)) — mineraloid / man-made material

Goldstone (Synthetic Aventurescence Glass)

Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)

mineraloid / man-made material

Hematite cameo or hematine imitation (Hematite (Fe₂O₃); possibly synthetic hematine or black glass) — mineral

Hematite cameo or hematine imitation

Hematite (Fe₂O₃); possibly synthetic hematine or black glass

Colorless faceted gemstone, likely cubic zirconia (Cubic zirconia (zirconium dioxide, ZrO₂); visual confirmation is unavailable) — gemstone

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂); visual confirmation is unavailable

Amber (Succinite (fossilized tree resin, C10H16O)) — fossil

Amber

Succinite (fossilized tree resin, C10H16O)

Amber (Succinates (Fossilized Tree Resin)) — fossil

Amber

Succinates (Fossilized Tree Resin)

Amber (Succinite (fossilized organic resin)) — mineral

Amber

Succinite (fossilized organic resin)

Amber (Succinite (fossilized resin)) — mineral

Amber

Succinite (fossilized resin)

Amber (Amber (C10H16O)) — mineral

Amber

Amber (C10H16O)

Amber (Succinite (fossilized tree resin)) — mineraloid

Amber

Succinite (fossilized tree resin)

Amber (Fossilized Tree Resin (Succinite)) — mineraloid

Amber

Fossilized Tree Resin (Succinite)

Amber (Fossilized Tree Resin (Successite)) — fossil

Amber

Fossilized Tree Resin (Successite)

Amber (Succinate (Fossilized Tree Resin)) — mineraloid

Amber

Succinate (Fossilized Tree Resin)

Amber (Succinite (organic fossilized resin)) — mineraloid

Amber

Succinite (organic fossilized resin)

Amber (Succinate (Fossilized Tree Resin)) — mineraloid

Amber

Succinate (Fossilized Tree Resin)

Amber (Succinite (C10H16O)) — Mineraloid

Amber

Succinite (C10H16O)

Rough Amber (likely Copal or immature Amber) (Organic gemstone / Succinite (if Baltic)) — mineral

Rough Amber (likely Copal or immature Amber)

Organic gemstone / Succinite (if Baltic)