To answer the trade main needs, GGTL Laboratories has been developing instruments to improve the gemstones analysis. We focus on matters such as authentication, synthetic discrimination, treatment disclosure and origin determination.
The new D-Tect V2 is available.
During a year of development, we have completely redesigned it, making it more ergonomic, efficient and compact.
Equipped with a new generation of highly sensitive spectrometer, its working speed is almost multiplied by two.
It is equipped with the latest version of our in-house software, Spect-Ident, to which a database is added to provide valuable assistance in sorting colourless melee diamonds. Spect-Ident monitors the collected spectra in real time, and with the help of coloured, luminous or sound signals, it indicates to the technician the 100% natural stones and draws his attention to those that need to be observed more closely.
The D-Tect V2 can analyse diamonds of all shapes and sizes, from Ø 0.4 mm to... 100 ct and more, no limits.
For the vast majority of stones, the analysis is done at room temperature, and the few uncertain stones can be analysed at low temperature (77K, or -196°C) as it is done in modern gemmological laboratories.
In terms of efficiency, its effectiveness is no longer in question; a trained technician can, for example, analyse up to more than 1500 diamonds of Ø 0.8 mm per hour, and even more for larger diameters.
Finally, the D-tect V2 can also be used for Raman scattering spectrometry, which permits the identification of substitutes such as synthetic moissanite, CZ, natural zircon, etc.
As before, the D-Tect is, together with the DFI (Version 3 planned for 2023), the only instrument on the market that gives only two answers for diamonds, "natural" or "synthetic".
No refer to send to a laboratory, therefore less costs and no time wasted.
For more information, please contact us at switzerland [at] ggtl-lab.org (switzerland[at]ggtl-lab[dot]org), we have a demonstration unit in Geneva - Switzerland.
The D-Tect V2 is designed, developed and manufactured in Switzerland, it is sold exclusively by GGTL Laboratories, Switzerland, Liechtenstein and Antwerp.
Documentation
Need more information?
switzerland [at] ggtl-lab.org (Contact us)
The new DFI© V3 is now ready and available, and we are pleased to present it to you. It took us nearly two years to develop and test this highly advanced and powerful version.
Along with the D-Tect© V2, the DFI© V3 is the only instrument on the market that gives only two answers for colourless diamonds: ‘natural’ or ‘synthetic’. There are no ‘refers’ to send to a laboratory – you are the laboratory!
The DFI© V3 is more compact, ergonomic and powerful. Like the D-Tect© V2, it is equipped with our new spectrometer, the GEM10©, specially produced for GGTL Laboratories. This spectrometer, calibrated for absolute irradiance, is equipped with a new, very fast cooled CCD detector for improved production speed.
It can analyse diamonds of Æ 0.4 mm or less up to 100 carats or more; the instrument has no dimensional limits. It can analyse rough or cut diamonds of all shapes (baguettes, ovals, trilliants, princesses, etc.). The DFI© V3 reliably identifies all synthetic diamonds, whether HPHT, CVD and even identify HPHT-treated CVD.
The DFI© V3 can be equipped with one or two spectrometers, with a resolution of 1.3 nm for the single spectrometer (sufficient for melee sorting), or for two spectrometers, a resolution of 0.3 nm for one (UV-Vis) and 0.7 nm for the other (Vis-NIR).
It is equipped with our Spect-Ident© V 1.3 software, which provides valuable assistance to the operator. With our software, an experienced technician can sort 1,500 to 3,000 diamonds per hour, regardless of their size. Spect-Ident© is equipped with two databases, one dynamic database integrated into the software that allows reference spectra (diamond, HPHT & CVD synthetic diamond, simulants) to be superimposed on the displayed spectrum. The second database is a table listing all the relevant centres of colourless diamonds with detailed descriptions and documentation for each centre.
- The DFI© V3 is designed, developed and manufactured in Switzerland.
- It is sold and distributed exclusively by the three laboratories of the GGTL Laboratories group, located in Switzerland, Liechtenstein and Antwerp.
- Dimensions: L 670, W 340, H 580 mm, maximum power consumption: ≈ 400 W (measured).
- The DFI© V3 cannot be sold in the following countries: United States, Russia, China and India.
Documentation
Need more information or quotes?
switzerland [at] ggtl-lab.org (Contact us)
Our UV-Vis-NIR spectrometer has been specifically designed to analyse any gemstones of all sizes, from 1.0 mm an up, at room and at low temperature (-196°C, liquid nitrogen conditions). The analysis time with this instrument is very fast; single scans takes less than 50 msec, making multi-scan acquisitions very efficient. The instrument can be supplied in various configurations that permit resolutions between 0.3 and 1.2 nm. The instrument is delivered with all accessories needed for low temperature spectroscopy and, upon request, we can supply the accessory for the acquisition of polarized spectra.
Need more information?
switzerland [at] ggtl-lab.org (Contact us)
The GGTL Photoluminator Raman/Photoluminescence spectrometer system is specifically built for the analysis of gemstones. Its main application is for low temperature photoluminescence spectroscopy of diamond. The system is adjustable with various spectrometers and lasers from 360 to 785 nm, thus allowing solutions for many budgets and uses. The standard Photoluminator system uses three lasers: a 405 nm, a 473 nm, and a 532 nm laser, which can be exchanged in less than one minute without moving the sample that is being analysed.
The sample chamber is sealed against any laser leakage as the lasers can only be operated with a closed sample chamber door; hence the instrument is classified as a class I laser product. A volume of 28x29x32 cm is available inside the chamber where the samples are moved on a motorized XYZ stage with a 50 mm motion in each direction. The stage is set up to work best with the special GGTL low temperature accessory supplied with the system.
The GGTL Photoluminator system can be coupled with a series of different spectrometers via a fibre optic cable. The standard version uses a quadruple-channel spectrometer with thermoelectrically cooled CCD detector that operates over a range of 250 to 1050 nm offering a rather high resolution of 0.30 nm. If even higher throughput is needed, then double or even single channel spectrometers with equally cooled CCD detectors can be supplied; these have a lower resolution of 0.60 nm (double channel) and 1.2 nm (single channel) but have a higher light throughput. If a higher resolution is needed, we can supply a research grade Echelle spectrograph with the GGTL Photoluminator that delivers a (average) very high resolution of 0.05 nm over the range of 350 to 1150 nm. It uses an Andor camera with a thermoelectrically cooled CMOS detector. The acquisition time using such a system is distinctly longer than with the standard spectrometers, thus more complex and requires a trained hand.
Need more information?
switzerland [at] ggtl-lab.org (Contact us)
Hard steel (K890, very good toughness and compressive strength), hardened base and pestle.
Traces (in %, ≈): C 0.85, Si 0.55, Mn 0.40, Cr 4.35, Mo 2.80, V 2.10, W 2.55, Co 4.50.
CHF 490.00 + shipping costs.
VAT applicable for shipments within Switzerland
Ordering: switzerland [at] ggtl-lab.org (switzerland[at]ggtl-lab[dot]org)
The Abich mortar allows the pulverisation of most rocks and other mineral materials for the preparation of powders (X-ray diffraction, infrared spectrometry, etc.). This relatively old tool remains useful and convenient. It can be used manually (using inertia of the pestle), or by percussion using a heavy mallet.
Otto Wilhelm Hermann von Abich (born 1806 in Berlin, died 1886 in Vienna) showed an early interest in geology, thanks to his father, Wilhelm Von Abich, a mining consultant, and his maternal grandfather Martin Klaport (1747 - 1817). Later, as a student of physics and mathematics, Abich was able to attend lectures by several of the great scientists of the 19th century, George Hegel (philosophy), Leopold Ranke (history) and Leopold von Buch (geology), as well as lectures on geography by Carl Ritter and Alexander von Humboldt.
In 1831, after obtaining his university degree, Abich defended a thesis on mineralogy in Latin and studied volcanoes in Italy between 1833 and 1836. From 1841 to 1844, von Abich worked as a professor of geology and mineralogy at the University of Derpt (Tartu) (today in Estonia).
Some references
- Buser M., 1998, Hüte-Konzept versus Endlagerung radioaktiver Abfälle; Argumente, Diskurse und Ausblick, Eidgenössisches Nuklearsicherheitsinspektorat ENSI, Schweitzerische Eidgenossenschaft, 64 p.
- CIPM (1879). Procès-Verbaux du Comité International des Poids et Mesures, 1878, Imp. Gauthier-Villars, Paris, France, 271p. (see pages 166, 167, 169, 170, 217).
- Fremy, E. (Ed.). (1883). Encyclopédie chimique. (No. 71). P. Vicq-Dunod & Cie., 600 p. (see page 9).
- Melik-Adamyan H.H., Khachanov C.V. (2011). Investigations by the German geologist, H. von Abich, in Armenia. INHIGEO Newsletter No. 43, pp 49-52 (Biography).
- Meunier S. (1877). Géologie technologique. Traité des applications de la géologie aux Arts et à l'Industrie. VIII. Trad. Economic Geologie, Durham. J. Rotschild editor, Paris, 344pp (see page 208).