COMPARE INDEX

Side-by-side gem comparisons

165 look-alike pairings, with the decisive observation points laid out against published refractive index, specific gravity, hardness, and fluorescence data.

• Almandine GarnetVSNatural Ruby
• Almandine GarnetVSPyrope Garnet
• Almandine GarnetVSRhodolite Garnet
• AmberVSCitrine
• Andesine-LabradoriteVSColor-Change Garnet
• Andesine-LabradoriteVSLabradorite
• AquamarineVSBlue Fluorite
• AquamarineVSBlue Topaz
• AquamarineVSBlue Zircon
• AquamarineVSNatural Blue Sapphire
• AquamarineVSParaíba Tourmaline
• AquamarineVSPhosphophyllite
• AventurineVSJadeite
• Black GlassVSJet
• Black GlassVSObsidian
• Black OpalVSAssembled Opal (Doublet / Triplet)
• Black OpalVSBoulder Opal
• Black OpalVSMatrix Opal
• Black SpinelVSBlack Star Sapphire
• Black SpinelVSBlack Tourmaline (Schorl)
• Black SpinelVSBlack Zircon
• Black SpinelVSMelanite Garnet
• Black Tourmaline (Schorl)VSMelanite Garnet
• Blue CalciteVSBlue Fluorite
• Blue FluoriteVSBlue Topaz
• Blue GlassVSNatural Blue Sapphire
• Blue Spinel (Natural)VSBlue Topaz
• Blue Spinel (Natural)VSSynthetic Blue Spinel
• Blue TopazVSBlue Zircon
• Blue TopazVSParaíba Tourmaline
• Boulder OpalVSMatrix Opal
• Brown GlassVSSmoky Quartz
• Brown SapphireVSBrown Zircon
• Brown SapphireVSDravite (Brown Tourmaline)
• Brown ZirconVSSmoky Quartz
• Champagne TopazVSSmoky Quartz
• CharoiteVSSugilite
• Chrome DiopsideVSNatural Emerald
• Chrome DiopsideVSTsavorite Garnet
• ChrysopraseVSJadeite
• ChrysopraseVSMalachite
• ChrysopraseVSPrehnite
• CitrineVSHeliodor
• CitrineVSNatural Yellow Sapphire
• CitrineVSScapolite
• CitrineVSYellow Glass
• CitrineVSYellow Topaz
• Clear GlassVSPlastic / Acrylic / Lucite
• Clear GlassVSRock Crystal / Quartz
• Color-Change GarnetVSNatural Color-Change Sapphire
• Crystal OpalVSWelo Opal / Ethiopian Opal
• Crystal OpalVSWhite Opal
• Cubic ZirconiaVSNatural Diamond
• Cubic ZirconiaVSNatural White Sapphire
• Demantoid GarnetVSMelanite Garnet
• Demantoid GarnetVSNatural Emerald
• Demantoid GarnetVSSphene (Titanite)
• Demantoid GarnetVSTsavorite Garnet
• Dyed HowliteVSLapis Lazuli
• Dyed HowliteVSSodalite
• Fire OpalVSImperial Topaz
• Fire OpalVSMexican Opal
• GGG (Gadolinium Gallium Garnet)VSYAG (Yttrium Aluminum Garnet)
• GosheniteVSPhenakite
• GosheniteVSRock Crystal / Quartz
• GosheniteVSWhite Topaz
• Gray MoonstoneVSGray Spinel
• Gray MoonstoneVSLabradorite
• Gray SapphireVSGray Spinel
• Gray SapphireVSLabradorite
• Gray SpinelVSLabradorite
• Green GlassVSSynthetic Green Sapphire
• Green SapphireVSGreen Spinel
• Green SapphireVSSynthetic Green Sapphire
• Green SapphireVSTsavorite Garnet
• Green SpinelVSTsavorite Garnet
• Green Tourmaline (Verdelite)VSPeridot
• Grossular GarnetVSPeridot
• Grossular GarnetVSPrehnite
• Grossular GarnetVSTsavorite Garnet
• HeliodorVSYellow Topaz
• Hematine (Magnetic Hematite)VSHematite
• Hessonite (Cinnamon Stone)VSSpessartite Garnet
• Imperial TopazVSOrange Sapphire / Padparadscha
• Imperial TopazVSYellow Topaz
• IoliteVSTanzanite
• JadeiteVSNephrite
• JetVSOnyx
• Lapis LazuliVSSodalite
• Mahogany ObsidianVSTiger's Eye
• MoissaniteVSColorless Zircon (High Type)
• MoissaniteVSSynthetic Rutile
• MorganiteVSPink Spinel
• MorganiteVSPink Topaz
• MorganiteVSRose Quartz
• Natural AlexandriteVSAndalusite
• Natural AlexandriteVSAndesine-Labradorite
• Natural AlexandriteVSColor Change Spinel
• Natural AlexandriteVSColor-Change Garnet
• Natural AlexandriteVSNatural Color-Change Sapphire
• Natural AlexandriteVSSynthetic Alexandrite (Pulled / Verneuil)
• Natural AlexandriteVSSynthetic Color-Change Corundum (Vanadium-Doped)
• Natural AlexandriteVSSynthetic Color-Change Sapphire (Vanadium-Doped Corundum)
• Natural AlexandriteVSZultanite (Color-Change Diaspore)
• Natural AmethystVSKunzite
• Natural AmethystVSPurple Glass
• Natural AmethystVSPurple Sapphire
• Natural AmethystVSPurple Spinel
• Natural AmethystVSSynthetic Amethyst
• Natural Blue SapphireVSBlue Spinel (Natural)
• Natural Blue SapphireVSBlue Topaz
• Natural Blue SapphireVSSynthetic Blue Sapphire
• Natural Blue SapphireVSSynthetic Blue Spinel
• Natural Blue SapphireVSTanzanite
• Natural Color-Change SapphireVSColor Change Spinel
• Natural Color-Change SapphireVSSynthetic Color-Change Sapphire (Vanadium-Doped Corundum)
• Natural DiamondVSNatural White Sapphire
• Natural EmeraldVSGreen Glass
• Natural EmeraldVSGreen Tourmaline (Verdelite)
• Natural EmeraldVSSynthetic Emerald
• Natural EmeraldVSTsavorite Garnet
• Natural Pink SapphireVSNatural Ruby
• Natural Pink SapphireVSPink Spinel
• Natural Pink SapphireVSPink Topaz
• Natural Pink SapphireVSPink Tourmaline
• Natural Pink SapphireVSRose Quartz
• Natural Pink SapphireVSSynthetic Pink Sapphire
• Natural RubyVSSynthetic Ruby
• Natural White SapphireVSSynthetic White Sapphire (Colorless Synthetic Corundum)
• Natural White SapphireVSWhite Spinel
• Natural Yellow SapphireVSSynthetic Yellow Sapphire (Pukhraj Substitute)
• Natural Yellow SapphireVSYellow Topaz
• Natural Yellow SapphireVSYellow Zircon
• Orange GlassVSSpessartite Garnet
• Orange Sapphire / PadparadschaVSSpessartite Garnet
• Orange TourmalineVSSpessartite Garnet
• PeridotVSTsavorite Garnet
• PhenakiteVSRock Crystal / Quartz
• Pink GlassVSNatural Pink Sapphire
• Pink TourmalineVSRubellite
• Purple GlassVSSynthetic Purple Sapphire
• Purple SapphireVSSynthetic Purple Sapphire
• Purple SapphireVSTanzanite
• Pyrope GarnetVSNatural Ruby
• Pyrope GarnetVSRhodolite Garnet
• Red GlassVSNatural Ruby
• Red SpinelVSNatural Ruby
• Red SpinelVSSynthetic Red Spinel
• Red Zircon (Hyacinth)VSNatural Ruby
• Red Zircon (Hyacinth)VSRubellite
• RhodochrositeVSRhodonite
• Rhodolite GarnetVSRubellite
• Rock Crystal / QuartzVSColorless Zircon (High Type)
• Rock Crystal / QuartzVSWhite Topaz
• RubelliteVSNatural Ruby
• Synthetic Alexandrite (Flux / Hydrothermal)VSNatural Alexandrite
• Synthetic Alexandrite (Flux / Hydrothermal)VSSynthetic Alexandrite (Pulled / Verneuil)
• Synthetic AmethystVSSynthetic Purple Sapphire
• Synthetic Color-Change Corundum (Vanadium-Doped)VSSynthetic Color-Change Sapphire (Vanadium-Doped Corundum)
• Synthetic EmeraldVSSynthetic Green Sapphire
• Synthetic OpalVSWhite Opal
• Synthetic Red SpinelVSNatural Ruby
• Synthetic Red SpinelVSSynthetic Ruby
• White MoonstoneVSWhite Opal
• White SpinelVSYAG (Yttrium Aluminum Garnet)