Gemmologist II - 2 Posts

Posted: Sep 23, 2026 Expires: Not specified View Jobs in Engineering / Technical
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Industry Government Founded 1954 Type Public Website http://www.publicservice.go.ke/ Address P.O. Box 30095, 00100, Nairobi, Kenya Harambee Avenue Nairobi, Kenya
View All Jobs at Public Service Commission Kenya (PSCK)

For appointment to this grade, a candidate must have:-

  • a Bachelors degree in Geology, Earth Sciences, Chemistry, Mineral Processing or Materials Engineering from a university recognized in Kenya; and
  • proficiency in using gemological testing instruments

Duties and Responsibilities
Duties and responsibilities will include: -

  • examining and identifying minerals using basic, standard, and advanced mineral testing equipment;
  • collecting, analyzing, and interpreting mineralogical data to support effective resource management and decision-making;
  • assisting in grading and valuing gemstones to determine and enhance their market value;
  • safely processing, pulverizing, and homogenizing incoming ore and mineral samples for laboratory analysis;
  • performing routine quantitative analyses using XRF (X-ray Fluorescence), XRD (X-ray Diffraction), and spectrometer systems;
  • calibrating and maintaining sensitive laboratory instruments, ensuring accurate results and complete batch chain-of-custody documentation;
  • evaluating rough gemstones to estimate weight recovery and maximize polished gemstone yield; and
  • performing and supervising precision gemstone processing, including sawing, pre-forming, faceting, and cabochon cutting.
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