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Journal of Materials Science

, Volume 29, Issue 6, pp 1514–1520 | Cite as

The physical and chemical properties of synthetic and natural jadeite for jewellery

  • Tinghe Zhao
  • Xuewei Yan
  • Shuojing Cui
  • Wei Niu
Papers

Abstract

Jadeite was synthesized from its glass of stoichiometric composition NaAlSi2O6, and a colouring agent Cr2O3 (0.3–0.6 wt%) was added to achieve the emerald colour. The conditions employed were a pressure range of 3.0–5.0 GPa and a temperature range of 1150–1750 °C, for periods of 1–480 min. The physical and chemical properties of synthetic jadeite, such as microstructure, unit cell parameters, melting point, thermal stability, hardness, density and refractive index, etc., were compared with those of natural jadeite. The optimum crystallizing conditions for the synthesis of jadeite for jewellery were above 4.5 GPa, 1450 °C and 60 min. The synthetic jadeite was emerald in colour, translucent, 12 mm diameter and 6 mm thick.

Keywords

Colour Polymer Microstructure Refractive Index Thermal Stability 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • Tinghe Zhao
    • 1
  • Xuewei Yan
    • 1
  • Shuojing Cui
    • 1
  • Wei Niu
    • 1
  1. 1.Changchun Institute of Applied chemistryChinese Academy of SciencesChangchunPeople’s Republic of China

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