| Citation: | Shuji Oishi, Hirafumi Yamamoto, Takaomi Suzuki. Growth of Emerald Crystals by Evaporation of Na2O-MoO3 Flux. Journal of Earth Science, 2002, 13(1): 35-39.
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Well-formed crystals of emerald, Be3Al2Si6O18 : Cr, were easily grown from an Na2O-MoO3 flux by an isothermal technique. The crystal growth was conducted by heating a mixture of solute and flux at 1 100 ℃ for 24 h. The evaporation loss of flux depended on the amount of Na2O added to MoO3. Emerald crystals of lengths up to 2.1 mm and widths of 1.4 mm were grown. The crystal sizes were dependent on the evaporation loss of the flux. The obtained crystals were transparent and exhibited the typical emerald~green color. The form of the emerald crystals was a twelve sided prism bounded by well~developed faces. The aspect ratios were in the region of 1.4 to 2.3. The density was (2.64±0.02) g/cm3. The IR absorption bands were in good agreement with the literature data.
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