SSEF at Tucson AGTA show (30 January – 4 February 2024)
SSEF is honoured to take part in the upcoming edition of the AGTA show in Tucson (AZ, USA). We will be offering coloured gemstone express testing services at our booth in the East Galleria. SSEFAGTA Booth in the East Galleria30 January-04 February 2024 Tel: +41 79 219 72 38 (only during AGTA Tucson show) Dr. [&
SSEF closed 21 December – 2 January
The SSEF laboratory will be closed for the holidays from December 21st 2023 to January 2nd 2024. We will reopen on January 3rd 2024. Our whole team would like to thank you for your confidence in our services. We wish you peaceful holidays and look forward to working with you in 2024.
Dehydration of Diaspore and Goethite during Low-Temperature Heating as Criterion to Separate Unheated from Heated Rubies and Sapphires
Dehydration of Diaspore and Goethite during Low-Temperature Heating as Criterion to Separate Unheated from Heated Rubies and Sapphires. Minerals 2023, 13, 1557.
A study of nickel-bearing type Ia diamonds
A study of nickel-bearing type Ia diamonds. IGC 2023 Proceedings, 37-39.
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
Further Characterisation of Native Copper Inclusions in Cu-Bearing Tourmaline
Further Characterisation of Native Copper Inclusions in Cu-Bearing Tourmaline. The Journal of Gemmology, 38(5), 427-429.