The Appraiser’s Corner
The following links are provided to allow gemmologists and appraisers keep up-to-date with developments in the industry. Copyright and content responsibility remain with the linked organization and do not represent any endorsement or opinion of the Canadian Institute of Gemmology.
- Diamond Cut Grading Simplified (PDF) – by Dr. Bill Hanneman
- Composite and leaded/filled rubies – How to deal with them
- Gemstone Inclusion Library – Samples and Inclusion Glossary
- Gemstone Magnetism
- Gemology Research and Reference – from ISG
- Gemstone Treatment Report – a valuable resource for practising gemmologists
- Inclusion Album – From the GRS – Gem Research
- Phototeque Gemmes-Inclusions
- Inclusion Pictures – From the AIGS Gem Testing Laboratory
- Les Inclusions (Inclusions) – in French
- Spectra Database from Gemlab, UK
- RRUFF: database of Raman spectra, X-ray diffraction and chemistry data for minerals
- Optical Spectroscopic Data
- Spectre d’Absorption (Absorption Spectra) – in French
- Mineralogy Database – an excellent reference
- Gill’s index of G&G articles 1934-1980
- Gems & Gemology Free Article View/Downloads
- Geohavens – gemmological reference site
- FARLANG – A collection of 25,000 pages, covering gems, diamonds, mining, gemology
- YourGemologist – great gemological reference website
- Pearl-Guide.com. Excellent resource for pearls.
- Guia del joyero para el manejo de las piedras preciosas (in Spanish)
- Pricescope Diamond Journal
- Judge orders refund in sale of treated beryls
- A Note on “B” Jade
- Laser tomography: a new tool to uncover evidence of heating in ruby and sapphire
- Guidelines with Respect to the Sale of Diamonds, Coloured Gemstones and Pearls brochure (PDF) 252k
- JVC Appraisal Guidelines/Part 1
- JVC Appraisal Guidelines/Part 2
- AGTA Gemstone Enhancement Manual
- Five Retail Values
- Describing Gemstone Treatments
- Diamonds and “Made in Canada” Representations