debeers 2

Diamond Course

Diamond Course : Rough Diamond Grading and Evaluation Course

Rough Diamond Course : Objectives

This  Diamond course will prepare you to become proficient in every technique involved in the manufacturing and grading of diamonds

diamond course

To teach the student how to sort and evaluate diamonds both in the rough and polished state and how color, imperfection, shape and proportions affect prices

Our Course Outline (Duration: 2 weeks)
  • How to use a loupe correctly
  • Gem and near gem
  • Different quality shapes colour sizing and sieving
  • Great precision of what is SAWABLE, MAKEABLES, MACCLES, CLIVAGE, REJECTIONS, FLATS and BOART with its qualities and colours
  • Cullinan,  De Beers mine, surface , underground tour
  • Visits to various alluvial diggings
  • How to use the Rapaport Diamond Price List. And the international Rapaport diamond price structure
  • How to look for and identify the grain in a sawed (four point) diamond
  • How to look for and identify the crystal symmetry, axis, plane, form and habit of diamond crystals
  • Moissanite identification
  • The study of impurity centres in rough diamond crystals, their cause and effect
  • How to select diamonds for fancy shapes, determining their ultimate form when in the rough
  • How to determine colour in diamonds, both natural and artificial, and its effect on buying and selling
  • How to select rough diamonds for purity, colour, size, shape and unusual qualities
  • How to determine whether a whole rough diamond is to be cleaved, sawed or remain whole
  • The process used in cutting and shaping elliptical diamonds such as , ovals,marquises pear shaped diamonds, etc
  • Classification of rough gems and industrial diamonds
  • How to use the Rapaport Diamond Price List and the international diamond price structure
  • Moissanite identification
  • Reading your GIA reports (Gemological Institute of America)
  • How to determine table, crown angle, pavilion and depth
  • Diamond grading systehysical and optical properties: how to clarity grade, and how to plot clarity characteristics
Course Costs
  • South African citizen: R8500
  • Non-South African citizen: US$1000
  • A 50% registration deposit fee is payable
The Rough Diamond Evaluation and Grading Next next commencement is as follows:

Suite 505 SA Jewellery Center, Jewel City  Johannesburg:  20 June 2016 – 04 July 2016

  • Each course is limited to a maximum of 4 (Four) students. Corlia can be contacted on 2782 965-7740

Corlia Roberts courses are presented in the heart of the diamond industry in South Africa in Jewel City, home to all the major diamond factories,   The South African Diamond and Precious metals regulator, as well as the GIA and EGL  grading laboratories

Rough Diamond Course  @diamondcourses

Corlia Roberts offering professional Rough Diamond grading and Evaluation Courses

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