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Green samples acquired as jade from New Zealand, Austria, USA and Brazil were powdered and mixed with teflon (composites jade–teflon). They were studied in this work using the thermoluminescent technique to investigate their potential for applications in gamma-radiation dosimetry in the range of 10 Gy to 10 kGy. The samples were analysed by X-ray diffractometry and neutron activation. The glow curves and calibration curves of these composites were obtained, showing usefulness for high-dose dosimetry. [Copyright &y& Elsevier]