Emerald (Synthetic - Hydrothermal) Gemstone & Information | Gemopedia by JTV | Gemopedia™
Synthetic refers to a man-made material with a natural counterpart. The synthetic crystal replicates the chemical, optical and physical properties of the natural crystal with little or no variation. One of the most popular methods for creating synthetic emerald is the hydrothermal process, which uses heat and pressure to imitate natural conditions deep in the earth that formed natural gems. Nutrients are dissolved in a water solution with synthetic crystals forming as the solution cools. Synthetic emeralds offer you the best of both worlds. You get the beauty of a beloved, rare gemstone, but at a budget-friendly price!
Light To Very Dark Green To Strongly Bluish Green, Slightly Yellowish Green
Emerald-sandwich-synthetic-hydrothermal classificationCommonNameEmerald (Sandwich Synthetic-Hydrothermal)SpeciesSynthetic BerylVarietySynthetic EmeraldColorsLight To Very Dark Green To Strongly Bluish Green, Slightly Yellowish GreenAlternateNamesLechleitner Synthetic EmeraldGemstoneGroupsKeySeparationsRefractive index, birefringence, optic character distinguished beryl from other materials, but magnification is essential for separating synthetic beryl from natural material. Sandwich synthetic emerald might show evidence of a seed plate with spicules with the tapered end indicating the direction of growth.ClassificationCommentsMisnomer: cultured emerald
Emerald-sandwich-synthetic-hydrothermal chemistry & crystallographyChemicalNameberyllium aluminum silicateChemicalFormulaBe3Al2(SiO3)6Synthesissandwich hydrothermalCrystalSystemHexagonalChemistryClassificationSilicateNatureSyntheticCrystallinityCrystallineChemistryComments
Emerald-sandwich-synthetic-hydrothermal optical propertiesTransparencyTransparent - TranslucentDispersionOpticalCommentsRefractiveIndex1.575-1.581Birefringence0.004-0.004OpticCharacterUniaxialOpticSignNegativePolariscopeReactionDoubly Refractive (DR)FluorescenceSWUV: Moderate to strong red
LWUV: Moderate to strong redCCFReactionOften a bright red; not conclusivePleochroismDichroic, moderate to strong, varying shades of body color
Emerald-sandwich-synthetic-hydrothermal characteristic physical propertiesHardness7.5CharacteristicCommentsStreakWhiteSpecificGravityTypical:2.68ToughnessGoodInclusionsSandwich stones will have growth layers and have inclusions typical of hydrothermally grown stones.LusterVitreousStabilityGoodFractureConchoidalCleavagePoor, in one direction