Spinel (Synthetic - Flux) Gemstone & Information | Gemopedia by JTV | Gemopedia™
One method of creating synthetic spinel is called flux growth. During the flux growth process, flux, a substance that reduces the melting point of surrounding material, is combined, in a metal-lined crucible, with the elements that make up a specific gem mineral. The crucible is heated until its contents are liquid and then it is allowed to cool very slowly. As cooling continues, the gem mineral crystallizes from the solution. Flux grown synthetic gems can take up to a year to grow to a facetable size, but the exceptional clarity of these gems is well worth the wait! Synthetic gems have the same chemical, optical, and physical properties of their natural counterparts, but are a more cost-effective alternative to a natural gem.
Slightly Purplish Red, Medium Dark To Dark Blue, Very Slightly Violet Blue
Spinel-synthetic-flux classificationCommonNameSpinel (Synthetic - Flux)SpeciesSpinelVarietyFlux-Grown Synthetic SpinelColorsSlightly Purplish Red, Medium Dark To Dark Blue, Very Slightly Violet BlueAlternateNamesFlux-Grown Synthetic Spinel, Alumag, Corundolite, Lustergem, Magalux, Radient, Strongite ,Wesselton, Simulated Diamond, Aquagem, Rozircon, Berylite, Dirigem, Perigem, Emerada, ErinideGemstoneGroupsKeySeparationsMagnification, spectrum and RIClassificationCommentsColorless variety trade names: Alumag, Corundolite, Lustergem, Magalux, Radient, Strongite ,Wesselton, Simulated Diamond. Colored variety trade names: Aquagem, Rozircon, Berylite, Dirigem, Perigem, Emerada, Erinide. Misnomers: Brazilian Emerald, synthetic aquamarine, synthetic birthstone varieties, synthetic peridot, Hope Sapphire, Jourado Diamond.
Spinel-synthetic-flux chemistry & crystallographyChemicalNamemagnesium aluminum oxideChemicalFormulaMgAl2O4Synthesisflux growthCrystalSystemCubicChemistryClassificationOxideNatureSyntheticCrystallinityCrystallineChemistryComments
Spinel-synthetic-flux optical propertiesTransparencyTransparent - OpaqueDispersionStrength: weak fire Value: 0.02OpticalCommentsRefractiveIndex1.719
Tolerance:(+0.003/-0.003)BirefringenceOpticCharacterNAOpticSignNAPolariscopeReactionSingly Refractive (SR) With ADRFluorescenceSWUV: Variable
LWUV: VariableCCFReactionBlue: red to orangy redPleochroismNone
Spinel-synthetic-flux characteristic physical propertiesHardness8CharacteristicCommentsStreakSpecificGravity3.58-3.64 Typical:3.61ToughnessVariesInclusionsFlux-grown spinel typically has flux residue inclusions that can be orangy brown to black in color. Some flux inclusions are singular but others can be mistaken for fingerprint inclusions. Stones might contain metallic platelets from the platinum crucible. Dark blue stones might show a red flash under penlight due to cobalt coloring agent.LusterSubAdamantineStabilityVery GoodFractureConchoidalCleavageNone