DIAMONDS Identification of Natural Synthetic Treated Branko Deljanin
2 Day Course Day 1 Identifying Natural and SYNTHETIC Diamonds with UV lamp, Microscope and CPF (Cross Polarized Filters) Instructor: Branko Deljanin, B.Sc., GG, DGA, FGA, DUG President and Head Gemmologist, Canadian Gemological Laboratory Inc., Vancouver BC NATURAL DIAMONDS 1. COLOUR ORIGIN of diamonds: impurities, irradiation and lattice deformation 2. BROWN diamonds: sources, characteristics and identification 3. YELLOW diamonds: sources, characteristics, and identification 4. GREEN diamonds: sources, characteristics and identification 5. CHAMELEON diamonds: sources, characteristics and identification 6. BLUE diamonds: sources, characteristics and identification 7. PINK/RED diamonds: sources, characteristics and identification 8. GRADING OF COLOURED DIAMONDS in gem laboratories 9. Melee Colourless and Coloured diamonds: problem with screening, testing and grading SYNTHETIC DIAMONDS Diamonds could be also grown in laboratory (HPHT or CVD process) and synthetic diamonds could be colourless (type IIa), yellow to orange (type Ib) and blue (type IIb). 1. Types of diamonds based on impurity content 2. Theory of plastic deformation and relation to types 3. Causes of colour in synthetic diamonds (HPHT-grown, CVD-grown and artificially treated) 4. CPF method of type detection and instrumentation (technical instructions and set up) 5. Visual presentation of different types of diamonds and inclusions under microscope and CPF 6. CPF chart: benefits of using the method in daily gemology and appraising work 7. UV lamp: reaction of different types of diamonds under LW and SW UV light PRACTICAL WORKSHOP Samples of Ia, IIa, IIb, Ib diamonds (natural and synthetic origin) and mixed types are tested with microscopes, UV lamp and CPF (portable polariscope) for natural or synthetic origin
2 Day Course Day 2 Identifying TREATED Natural and Synthetic Diamonds with Standard and Advanced Instruments Instructor: Branko Deljanin, B.Sc., GG, DGA, FGA, DUG DIAMOND TREATMENTS standard instruments 1. Clarity Enhancements - unstable (Fracture Filling), 2. Clarity Enhancements - stable (Traditional Lasering, KM Laser drilling) 3. Processes for colour treatments of diamonds, natural and synthetic 4. Color Enhancements - unstable (Coating) 5. Color Enhancements - stable (irradiation, annealing, HPHT, multistep treatments) 6. Testing and screening methods for treated diamonds with standard instruments DIAMOND TREATMENTS advanced instruments After testing and screening with standard instruments, the diamond in question may then also be sent to an advanced lab for further testing and exact determination of color origin with VIS-NIR, FTIR and PL spectrometers (advanced and research instruments). 7. Identification methods for treated diamonds with advanced instruments at labs 8. Post treatments of HPHT-grown (irradiation) and CVD-grown diamonds (HPHT) 9. Certification of treated and synthetic diamonds at gem laboratories PRACTICAL WORKSHOP WITH TREATED AND SYNTHETIC DIAMONDS Microscopy metallic inclusions for synthetic and graphitization for HPHT treated UV lamp colours of fluorescence are giving indication of treated/synthetic origin Use of advanced instruments - screening with Visible-Near-infrared spectrometer Tools to bring home: CPF booklet, handouts Certificate of completion will be issued to all participants
½ Day Course (Adelaide Only) Identifying Diamond Types and Synthetic Diamonds with UV lamp,microscope and Cross Polarized Filters Instructor: Branko Deljanin, B.Sc., GG, DGA, FGA, DUG Lecture and practical workshop The use of treatments based on high-pressure, high-temperature (HPHT) annealing, low pressure annealing and irradiation with energetic particles with the aim to alter the colour of diamonds has become increasingly popular in the past 10 years. Diamonds can be also grown in the laboratory (HPHT or CVD) and these synthetic diamonds could be colourless (type IIa), yellow (type Ib) and blue (type IIb). You will learn to identify different types of diamonds and synthetic diamonds. You will also learn about - possible treatments/synthetic diamonds and their relation to types in order to know when to send stones to an advanced lab for further testing for natural, treated or synthetic origin. LECTURE (1 hour with questions) 1. Types of diamonds based on impurity content 2. Causes of colour in diamonds (natural and artificial) 3. Theory of plastic deformation and relation to types 4. Methods of type detection and instrumentation Typing by FTIR method - in gem labs CPF method - technical instructions and set up on microscope 5. Visual presentation of different types of diamonds and inclusions under microscope and CPF 6. CPF chart: benefits of using the method in daily gemology and appraising work. 7. UV lamp: reaction of different types of diamonds under LW and SW light (transparency to UV) PRACTICAL WORKSHOP Samples of Ia, IIa, IIb, Ib diamonds (natural, treated or synthetic origin) and mixed types on microscopes 2 participants on 1 microscope Tools to bring home: CPF booklet Certificate of completion will be issued to all participants
COST AND CDP POINTS 2 days total $990 (including GST).. CPD points 28 South Australia ½ day $330 (including GST).. CPD points 7 IMPORTANT NOTICE: Spaces are limited so to avoid disappointment please send your completed application form with full payment to secure your place. No refunds or terms will be offered. Spaces will be allocated upon receipt of payment only. DATES AND VENUE Western Australia Venue GAA Gem House 136 Railway St (corner Congdon St) Cottesloe WA 6011 Thursday 13 th - Friday 14 th March (9am 5pm) South Australia Venue GAA 4 th floor Room 421 Edments Building, 38 Gawler Place Adelaide SA 5000 Half day Sunday 16 th March (9am 12 Midday) New South Wales Venue GAA 24 Wentworth Ave Darlinghurst NSW 2010 Monday 17 th Tuesday 18 th March (9am 5pm) Queensland Venue GAA Suite 1A, 443 Ipswich Rd Annerley Qld 4103 Thursday 20 th Friday 21 st March (9am 5pm) Victoria Venue GAA 380-382 Spencer St West Melbourne Vic 3003 Sunday 23 rd Monday 24 th March (9am 5pm)
APPLICATION FORM Please send completed form to: NCJV Secretariat (Via Fax or Email only) Fax: (08) 8125 5822 Email: info@ncjv.com.au Name: Valuer No. Address: State: Post Code: Contact: Phone Mobile Email: Course 2 day NSW QLD WA VIC ½ Day (Adelaide Only) SA Payment - Cheque Money Order Mastercard Visa Direct Deposit Card Number - - - Name on card..... Expiry Date.. Signature... Amount $ No of people Direct Deposit Details BSB - 035 016 / Acc No 139461 / Acc Name National Council Jewellery Valuers / Ref: Your Valuer No