News & Library
Research notes, lab updates, events, and gemological insights from our team in Antwerp and Shanghai.
32 article(s) found
ResearchRecently a deep blue 0.71 carat sapphire (heated) was submitted to ALGT for origin report
Recently a deep blue 0.71 carat sapphire (heated) was submitted to ALGT for origin report. According to the chemical analysis and inclusion characteristics, we concluded that the…
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EventsWe are very proud to become the first platinum sponser for F.E.E.G. Symposiums 2024 in Brussels.
We are very proud to become the first platinum sponser for F.E.E.G. Symposiums 2024 in Brussels. Federation for European Education in Gemmology – Symposiums 2024 – 2025 Below some…
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ResearchThis amazing 3.03 cts and 3.15 cts demantoid pair originated from Russia was recently brought in ALGT for research.
This amazing 3.03 cts and 3.15 cts demantoid pair originated from Russia was recently brought in ALGT for research. Since Russian demantoid often occurs as small grains with no…
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ResearchALGT recently received strings of ruby beads purchased by a client at the Hong Kong Jewellery Fair.
ALGT recently received strings of ruby beads purchased by a client at the Hong Kong Jewellery Fair, which are vivid to deep red and quite transparent. His supplier told him that…
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AwardsKoninklijk Instituut der Eliten van den Arbeid (KIEA) awarded the Gold Medal for Expert in Diamond !
Koninklijk Instituut der Eliten van den Arbeid (KIEA) awarded the Gold Medal for Expert in Diamond ! Highest professional award in Belgium !
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ResearchWe recently received a group of unheated rubies from Myanmar, Mong Hsu
We recently received a group of unheated rubies from Myanmar, Mong Hsu. They all have deep blue color zoning, combining with clouds of fine exsolved diaspore particles; heat…
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EventsALGT in the Munich Show
From November 2 to 5, 2023, the 7th Geneva International Jewelry Exhibition (GEMGENEVE) opened at the Palexpo Exhibition Center in Geneva. The exhibition area was 30,012 square…
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EventsALGT in the 7th Geneva International Jewelry Exhibition
From November 2 to 5, 2023, the 7th Geneva International Jewelry Exhibition (GEMGENEVE) opened at the Palexpo Exhibition Center in Geneva. The exhibition area was 30,012 square…
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EventsALGT at Shanghai gemstone and jewelry show.
As an independent international laboratory specializing in colorstone testing capabilities, ALGT also participated in this jewelry exhibition, mainly conducting in-depth visits…
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