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Phase transformations as important markers for heat treatment detection in corundum and other gemstones
Phase transformations as important markers for heat treatment detection in corundum and other gemstones. IGC 2023 Proceedings, 111-113.
Purple to bluish grey chalcedony from Ethiopia
In the past 15 years, Ethiopia has repeatedly gained attention for a variety of new gem finds. In 2008, a large deposit of white play-of-colour opal was found (Rondeau et al., 2010), followed by black opal with play-of-colour in 2013 (Kiefert et al., 2014).
DNA Fingerprinting and age dating of historic natural pearls: a combined approach
DNA Fingerprinting and age dating of historic natural pearls: a combined approach. IGC 2023 Proceedings, 157-158.
SSEF at GemGenève (02-05 November 2023, Booth A71)
SSEF is honoured to take part in the upcoming edition of the GemGenève show at Palexpo in Geneva. We will be offering coloured gemstone express testing services at our booth A71. SSEFGemGenève Booth A7102-05 November 2023 (November 1st is setup day, goods can be submitted from 10am onwards)Tel: +41 79 219 72
Effects of Gamma Irradiation on Ruby and Pink Sapphire and Potential Detection Methods in Gem Labs
Keywords: Ruby, Pink sapphire, Gamma irradiation, UV-VIS, Raman, R-Line
SSEF in the Press
SSEF in the press Welcome to our page dedicated to SSEF press publications.For any question or media kit inquiries, please contact us. 23/01/2024 La commande la plus chère jamais réalisée par Louis Vuitton 05/12/2023 Perfection in Practice: How Do Emerald Enhancements Work? 27/11/2023 This Laser Can Help Ver
2020 Auction Highlights
2020 – Gems & Jewellery auction highlights Welcome to our page dedicated to auction season highlights sold with SSEF reports. Want to learn more about SSEF reports? Please click here: Understanding a SSEF Report You have an exceptional item that needs testing ? How to submit Sapphire Gems & Jewell
2021 Auction Highlights
2021 – Gems & Jewellery auction highlights Welcome to our page dedicated to auction season highlights sold with SSEF reports. Want to learn more about SSEF reports? Please click here: Understanding a SSEF Report You have an exceptional item that needs testing ? How to submit Sapphire Gems & Jewell
2022 Auction Highlights
2022 – Gems & Jewellery auction highlights Welcome to our page dedicated to auction season highlights sold with SSEF reports. Want to learn more about SSEF reports? Please click here: Understanding a SSEF Report You have an exceptional item that needs testing ? How to submit Sapphire Gems & Jewell
SSEF Auction Highlights
SSEF Auction Highlights Welcome to our page dedicated to highlights of items sold at auction with SSEF reports. Want to learn more about SSEF reports? Please click here: Understanding a SSEF Report You have an exceptional item that needs testing ? How to submit to SSEF 2022 – Gem & Jewellery Auction H