Passing on the craft

Keen to share its know-how, Piat offered for eight years customised training for professionals wishing to extend their knowledge of coloured gemstones and the lapidary art. These are the programmes it taught.

Coloured Stones Cutting

Objectives

  • Learning the distinctive features of the different cuts
  • Learning how to analyze a stone in 3D
  • Learning gem carving and polishing
  • Learning how to anticipate a re-cut

Programme

  • Overall approach of the rough, analysis of colour distribution in the rough
  • Preforming process
  • Faceting
  • Polishing crown and pavilion facets
  • Recutting in order to study weight loss
  • Analysis of the final cut and possible improvements that need to be done

Evaluation Criteria

Objectives

  • Knowing the six criteria to evaluate gemstones
  • Understanding prices differences
  • Assessing gemstones quality
  • Learning a descriptive vocabulary

Programme

  • Presentation of the six criteria to appraise the stone
  • Analysis of different laboratory certificates
  • Case study: gems with similar colours but different origins
  • Presentation of the main production centers

Inclusions

Objectives

  • Knowing the most common inclusions
  • Developing sales argument

Programme

  • Definition of various types of inclusions
  • Presentation of the main gemstones deposits
  • Description of some characteristic inclusions related to some specific deposits

Recutting, a major issue

Objectives

  • Knowing the approximate weight loss for usual new shapes
  • Anticipating the results of a simple re-cut
  • Recutting a stone according to specifications

Programme

  • Analysis of different changes of shape
  • Presentation of the main criteria to watch
  • Dimensions optimization, depending on the initial shape
  • Comparison of different faceting styles and how they have an effect on the final result

Precious Gemstones Trade

Objectives

  • Knowing the different sources of supply
  • Understanding what influences and impacts on prices

Programme

  • Presentation of the gem journey from the mine to the ending consumer
  • Analysis of price criteria
  • Check-list to be done before a sale

Custom-Made Training

Objectives

  • The Maison Piat offers customized solutions for specific professional events or needs:

Programme

  • Team building
  • Worldwide VIP customer events
  • Support and help during the presentation of new jewellery collections to sales force