gems, jade, pyroxene jade, jadeite, fei cui, synthetic jadeite, synthetic fei cui, simulants, HPHT

With Al₂(SiO₃)₃ and Na₂SiO₃·9H₂O as raw materials, the NaAlSi₂O₆ jadeite was synthesized in the temperature range of 1000–1600 °C under 5.0 GPa conditions. Amorphous glass materials are entirely converted to crystalline NaAlSi₂O₆ jadeite at 5.0 GPa and 1450 °C. All the experimental results reveal that the properties of synthetic NaAlSi₂O₆ resemble the natural jadeite very much. The research indicates that we provide a new approach to synthesize NaAlSi₂O₆ and offer an essential guideline for jewelry, which will be helpful for deep understanding on the origin of natural jadeite and the metamorphism of magma within the Earth.