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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 in Bangkok 10 – 19 January 2024
We will be in Bangkok 10 – 19 January 2024 offering our on-site testing services. The office will be closed on January 13th and 14th. 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
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.
Scientific Diamonds Course
Scientific Diamonds course Intense one-week course in scientific diamond testing. You will work hands-on with scientific spectroscopic methods and get theoretical insights into portable analytical testing methods such as: FTIR spectrometry, UV-VIS spectrometry, Raman microspectrometry, fluorescence imaging and
GemGeneve Pearl Exhibition 2023
Pearl Exhibition at Gemgenève November 2023 edition As a partner of the Gemgenève international gem and jewellery show, SSEF has contributed some pieces to the November 2023 exhibition on Pearls. On this page you will find further information about samples shown and other information of interest. Half-cut pea
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.