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2025

Synthetic coloured stones (2025)

Presentation by Dr. Michael S. Krzemnicki at the 2025 GILC conference in Tucson in February 2025.

Presentations
Gemmology
2024

SSEF News with a Focus on Antique Gems and Jewellery (2024)

Presentation by Dr. Michael S. Krzemnicki at the Swiss Gemmological Society SGG meeting in June 2024.

Presentations
Gemmology
2024

Detection of Low-Temperature Heat Treatment in Corundum: Possibilities and Challenges (2024)

Presentation by Dr. Michael S. Krzemnicki at the GILC conference in Tucson in 2024.

Presentations
RubySapphire
2024

News from the SSEF (2023)

Presentation by Dr. Michael S. Krzemnicki at the Swiss Gemmological Society SGG conference in 2023.

Presentations
Origins
2023

DNA Fingerprinting and Age Dating of Historical Natural Pearls

Presentation by Dr. Laurent E. Cartier at the International Gemmological Conference IGC 2023 in Tokyo, Japan.

Presentations
Pearl
2023

Phase transformations as important markers for heat treatment detection of corundum and other gemstones (2023)

Presentation by Michael S. Krzemnicki, Pierre Lefèvre, Wei Zhou at the International Gemmological Conference IGC 2023 in Tokyo, Japan.

Presentations
RubySapphire
2022

ISO standards in the diamond trade: history and benefits (2022)

Presentation at the 2022 Rendez-Vous Gemmologiques de Paris Conference by Jean-Pierre Chalain (original version of this presentation was in French, this version has been translated into English)

Presentations
Diamond
2022

News from the SSEF (2022)

Presentation by Dr. Michael S. Krzemnicki at the Swiss Gemmological Society SGG conference in 2022.

Presentations
Emerald
2021

Zircon inclusions in unheated pink sapphires from Ilakaka, Madagascar: A Raman spectroscopic study

Presentation at the online 2021 International Gemmological Conference by Dr. Michael S. Krzemnicki.

Presentations
SapphireTreatments
2019

Origin determination and traceability: An overview for gemstones (2019)

Origin determination and traceability: An overview for gemstones (2019)

Presentations
OriginsTraceability

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Age Dating Diamond DNA Emerald Gemmology Geochemistry Jade Methods Organics Origins Other Gemstones Pearl Ruby Sapphire Spinel Synthetics Tourmaline Traceability Treatments

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