Detection of Low-Temperature Heat Treatment in Corundum: Possibilities and Challenges (2024)
Presentation by Dr. Michael S. Krzemnicki Download Pdf Want to learn more about rubies? Start your journey to becoming an emerald expert with our free online course “Introduction to rubies”. Learn all about rubies. Their fascinating history, how they form, where they come from. Learn about all the d
SSEF in Bangkok 27 – 31 May 2024
We will be in Bangkok 27 – 31 May 2024 offering our on-site testing services. Our office is in the gem trade district at the Silom Road. Equipped with our instruments and spectrometers, we will be testing coloured gemstones. Please contact us to make an appointment. More information on our Bangkok services
SSEF at GemGenève (09-12 May 2024, Booth B13)
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 B13. SSEFGemGenève Booth B1309-12 May 2024 (May 8th is setup day, goods can be submitted from 10am onwards)Tel: +41 79 219 72 38 (only d
News from the SSEF (2023)
Presentation by PD Dr. Michael S. Krzemnicki Download Pdf
Join us for the live presentation of ASDI-500 (screening diamonds down to 0.5mm size) at the Antwerp Diamond Bourse on Thursday March 21st
ASDI-500, is the world’s first automatic device to verify the nature of diamonds – natural diamonds VS laboratory-grown diamonds VS diamond simulants – down to the tiny size of half a millimeter (0.5mm or 500 micrometers, hence its name ASDI 500).
SSEF on-site testing in Hong Kong, 23 February – 04 March 2024
We will be in Hong Kong 23 February – 04 March offering our on-site testing services, during the upcoming Hong Kong Jewellery and Gem Fairs. Equipped with our mobile instruments and spectrometers, we will be testing coloured gemstones (no diamonds or pearls) at the Asia World Expo (AWE, 27 February – 02 Mar
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.