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You are here: Home / Workshops / Spring 2021 – Colourless & Coloured Diamonds

Spring 2021 – Colourless & Coloured Diamonds

USD $700.00

USD
CAD
Security Deposit : USD $0.00

Category: Workshops
  • Description

Description

  • Overview: Identifying of Natural, Treated and Synthetic Diamonds
    with Standard and Advanced Instruments
  • Instructor: Branko Deljanin, B.Sc., GG, FGA, DUG (Gemmological Research Industries Inc, Canada)
  • Location:EGM, 460 rue Sainte Catherine Ouest, suite 913, Montréal
  • Flyer: 2020_10_09-ID_of_COLOURLESS_Diamonds.pdf / 2020_10_10-ID_of_COLOURED_Diamonds.pdf

Day 1
ID of Colourless Diamonds – Treated and Lab-grown

9am-12.30pm: IDENTIFICATION of NATURAL and SYNTHETIC DIAMONDS

  • Types of diamonds based on nitrogen and boron content
  • Colourless Natural diamonds: sources, characteristics and identification
  • Methods of growing HPHT and CVD diamonds
  • Inclusions in Natural and Synthetic diamonds
  • UV lamp – reaction of different types of diamonds under LW and SW UV light (“PL inspector”)
  • CPF (Cross Polarized Filters) method and instrumentation to screen and ID diamond’s origin

PRACTICAL WORKSHOP: Samples of Ia, IIa, IIb, Ib diamonds (natural synthetic origin) are tested with microscopes, mini UV lamp (“PL inspector”) and Mini Polariscope with Portable light

 

1.30-5.00pm: SCREENING for TREATMENTS of NATURAL and SYNTHETIC DIAMONDS

Clarity and Color Enhancements – unstable (fracture filling and coating)

  • Clarity and Color Enhancements – unstable (Fracture Filling and coating),
  • Clarity Enhancements – stable (Traditional Lasering, KM Laser drilling)
  • Testing and screening methods for treated diamonds with standard instruments
  • Post treatments of CVD-grown colorless diamonds (HPHT)
  • ID of HPHT-enhanced diamonds using advanced instruments
  • ID of mounted synthetic diamonds with EXA instrument and screening instruments
  • Problems and solution in identification of melee natural and synthetic diamonds

PRACTICAL WORKSHOP: Colorless Diamonds are tested with microscopes, mini UV lamps, CPF (portable polarioscopes) and portable spectrometer (EXA) for natural, treated or synthetic origin

 

 

Day 2
ID of Coloured Diamonds – Treated and Lab-grown

9am-12.30pm: IDENTIFICATION of NATURAL and SYNTHETIC DIAMONDS

  • BROWN diamonds: sources/producers, characteristics and identification
  • YELLOW and ORANGE diamonds: sources/producers, characteristics, and identification
  • GREEN and CHAMELEON diamonds: source/producers, characteristics and identification
  • BLUE diamonds: sources/producers, characteristics and identification
  • PINK/RED diamonds: sources/producers, characteristics and identification
  • Use of Synthetic Diamond ID Kit to separate Colored Natural and Synthetic Diamonds

PRACTICAL WORKSHOP: Microscopy –inclusions for HPHT and CVD synthetics, UV lamp – colours of fluorescence/phosphorescence and Cross Polarized Filters (CPF) patterns for synthetic origin.

1.30-5.00pm: IDENTIFICATION of TREATED NATURAL and SYNTHETIC DIAMONDS

  • Clarity and Color Enhancements – unstable (Fracture Filling and coating),
  • Clarity Enhancements – stable (Traditional Lasering, KM Laser drilling)
  • Processes for colour treatments of diamonds, natural and synthetic
  • Color Enhancements – stable (irradiation, annealing, HPHT, multistep treatments)
  • Post treatments of HPHT-grown and CVD-grown diamonds (irradiation)
  • Identification methods for treated diamonds with advanced instruments at labs
  • Grading of Colored diamonds with Munsell chips, masters using GIA and CGL-GRS system
  • Certification of treated and synthetic diamonds at gem laboratories

PRACTICAL WORKSHOP: Coloured Diamonds are tested with microscopes, mini UV lamps, (PL inspectors), portable polariscopes, Jewellery Inspectors and portable spectrometer (EXA) for origin

  • Portable “Synthetic Diamond ID Kit” (polariscope, lights, PL inspector), EXA will be available
  • Certificate of completion will be issued to all participants

Related products

  • Spring 2021 – Day 1: Colourless Diamonds

    USD $390.00
    Add to cart
  • Spring 2021 – Day 2: Coloured Diamonds

    USD $390.00
    Add to cart

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Company Profile

Gemmological Research Industries Inc. is a consulting company that specializes in the identification, grading and evaluation of gem quality rough, polished and mounted diamonds, gems, research and training of all segments of jewellery industry.

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info@BrankoGems.com
+1 604-619-3590

1213 Langdale Drive
North Vancouver, BC
V7R 1Z8 Canada

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