CGL - Canadian Gemlab Inc.

03/16/2026

Glad to announce that I am back in Toronto at George Brown College to offer 4 half-day workshops (Diamonds and Gems) on May 1 and May 2, 2026 in collaboration with Canadian Jewellers Association See you in 7 weeks in Toronto, bringing over 200 Rubies, Sapphires, Emeralds, Jades, and Diamonds (Natural and Laboratory-grown), and will teach you how to separate them using standard portable instruments!

More info attached, register at the link below

Events Calender CJA Summit & Expo CJA Industry Summit Click here CJA Expo Prestige Click here

03/22/2025

After 7 Mediterranean Gem and Jewellery Conferences (2015-2024) and 1 International Conference in Australia 2023, BrankoGems is organizing the 1st US Conference in Helena, June 13-15, 2025, with pre-post conference trips to Yogo, Missouri River, and Rock Creek sapphire mines and national parks.

MORE THAN HALF OF THE SEATS FOR SAPPHIRE TRIPS ARE SOLD OUT, SECURE PLACE AND REGISTER BY APRIL 15TH!

7 renowned international speakers will discuss sapphires from Montana, turquoise grading, current identification issues, and problems with natural, treated, and synthetic gems and diamonds. 3 Practical Workshops with over 200 samples are offered on ‘Treatment and origin determination of sapphires’ (Dr Lore Kiefert), ‘Turquoise Quality and Grading’ (Dan Joe Lowry), and ‘ID of LGD’ (Branko Deljanin). A Round Table moderated by Travis Lejman, conference co-chair, with 5 international experts, will discuss ‘Sapphire Origins’ and ‘LGD vs Natural Diamonds’.

🌎 Registration at www.gemconference.com/international-conferences

09/28/2024

PACKING FOR INDIA - 2 weeks of Lectures and Workshops in Mumbai hosted by HRD Lab and Hyderabad hosted by Basil Lab, more info and registration at https://www.gemconference.com/international-workshops

I will be visiting the cutting factory of DRC (instrument sponsor) and the CVD factory in Surat and Golconda area, the oldest mine sites for large type II colorless and pink diamonds from the 16th century. There are few seats available at both locations, certs are ready, as well as many instructor's books, portable instruments and samples to educate the Indian Diamond trade!

04/27/2024

Join me as host of LAST Advanced-Scientific lecture of BrankoGems on-line Academy on "Testing Natural, Treated and Synthetic Diamonds by Spectroscopy and Fluorescence Imaging"
April 29, 2024 – 8.30amPT, 11.30amET, 4.30pm London

Instructor: Dr Thomas Hainschwang

- Authenticity of colour for colored diamonds – most expensive gems
- Combination of luminescence microscopy and luminescence spectroscopy – Mega DFI System
- Photoluminescence and Visible spectroscopy of coloured diamonds
- Fluorescence imaging of Natural, HPHT-grown and CVD-grown diamonds

ORDER RECORDED lecture at https://www.brankogems.com/education/branko-gems-online-academy/a-s-program/diamonds/lecture-6

03/11/2024

Join me and Dr Alan Collins (King's college, UK) on lecture 3 of BrankoGems On-line Advanced-Scientific Academy
Defects of Natural and Lab-grown Diamonds
March 11, 2024 – 8.30amPT, 11.30amET, 4.30pm London

Instructor: Dr Alan Collins (King’s College London)

Order program at www.brankogems.com/education/branko-gems-online-academy/a-s-program/diamonds/lecture-3

Some of topics from his presentation.

- The scientific understanding of point and extended defects in diamonds
- Impurities in diamonds and relation to diamond types by FTIR spectroscopy
- Importance of N3 centre and side bands to identify natural diamond
- Defects in HPHT-grown and CVD-grown diamonds

Dr ALAN COLLINS is Emeritus Professor of Physics at King’s College London. He has studied the optical and electronic properties of diamond for more than 55 years and is recognised internationally as a leading expert on the origins of colour in gem diamonds. His research has covered many of the areas which are of concern in the industry today.

10/04/2023

Join 2nd Intermediate Level Lecture of BrankoGems Academy on Oct 6, 9amPT, 5pm London on "Fluorescence and Colour Origin of Natural and Lab-grown Diamonds" by John Chapman (Gemetrix) and myself. Registrations (Live or Recorded options) at https://www.brankogems.com/education/branko-gems-online-academy/intermediate-advanced-gems-diamonds-program/screening-of-natural-and-laboratory-grown-diamonds

09/30/2022

September was month for GEMMOLOGICAL Training of Local trade and CGL offered 2 courses: “ID of Lab-grown Diamonds” and “Testing Ruby, Sapphire and Emerald” workshops in Vancouver. Participants went through more than 100 diamonds and rubies of different origins with standard instruments and pass Test and Deserve Certificates of completion! E-Mail to [email protected] for upcoming courses in Fall and Winter.

06/24/2020

in case this is helpful!

Keep your jewellery insurance appraisals up to date!

If you have any jewellery items scheduled and insured separately under your home insurance policy you may want to make sure that your appraisals are up to date. With a decreased supply of diamonds in the market today COMBINED with a decreased demand, there has been an impact on diamond pricing. The way that insurance companies price insurance for your scheduled jewellery items is at a cost per $100 (or other amount) of coverage based on the full replacement cost of your item.

If you have not had your appraisals updated recently, you may inadvertently be paying too much for your insurance because in many cases the value of the item may have decreased this past year. The insurance company is only obligated to replace your item, not to pay out the amount of money that you have insured the item for, and only if you chose to replace the jewellery item.

06/24/2020

Keep your jewellery insurance appraisals up to date!

If you have any jewellery items scheduled and insured separately under your home insurance policy you may want to make sure that your appraisals are up to date. With a decreased supply of diamonds in the market today COMBINED with a decreased demand, there has been an impact on diamond pricing. The way that insurance companies price insurance for your scheduled jewellery items is at a cost per $100 (or other amount) of coverage based on the full replacement cost of your item.

If you have not had your appraisals updated recently, you may inadvertently be paying too much for your insurance because in many cases the value of the item may have decreased this past year. The insurance company is only obligated to replace your item, not to pay out the amount of money that you have insured the item for, and only if you chose to replace the jewellery item.