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Physical Gold Trading

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Prestige International is an AA-graded member of the Hong Kong gold and silver exchange (CGSE). We accept the entrustment from gold investors to verify the fineness of gold or other precious metals by the Hong Kong Precious Metals Assay Centre (HKPMAC). The assay service aims to further improve the transparency of gold transactions for both buyers and sellers.

  •  Efficient
  •  Profession
  •  Safety
  •  Guaranteed

Hong Kong Productivity Council

Fully accredited by HKPC (Hong Kong Productivity Council) to the ISO/IEC 17025:2005 standard, the Laboratory is recognized as centre of excellence for its expertise in specialist analytical procedures for precious metals. Samples are tested using a wide variety of methods depending upon the type and size of the sample, the specific elements to be tested and the accuracy required. A variety of instrumental and traditional techniques are used.

  • Establish a precious metal verification center
  • Research and develop gold testing technology
  • Establish test standards
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  • Establish a precious metal verification center

    Improve the level of internal laboratories and provide gold laboratory services for employees and the industry

  • Research and develop gold testing technology

    Research and development accreditation test 9999 gold testing technology

  • Establish test standards

    Establish the 9999 gold test standard

Typical methods of gold analysis

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Fire Assay Collection

The fire assay is a classic statistical analysis method that applies metallurgical principles and techniques to analytical chemistry to directly determine the gold content. The fire assay provided by the laboratory uses the international standard method (ISO11426:1997), which is widely recognized and adopted at home and abroad, and its measurement range is suitable for a range of 333-999‰.

Fire Assay-ICP-OES technique for low to medium grade powder/ore samples

The ICP-OES subtraction method is another gold fineness test method, which uses an indirect method to determine the fineness of gold. The sample is dissolved in aqua regia, and the content of impurity elements is measured with an ICP spectrometer, and the content of gold is obtained by subtracting the total impurity.

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Testing time

3-5 working days

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