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08-11 May 2025, Palexpo, Geneva, Switzerland Henn GmbH & Henn of London Ltd. - Booth: C52 GemGenève - Geneva International Gem & Jewellery Show
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03-08 February 2025, Tucson, Arizona, USA Henn GmbH – Booth: 231 & 331 GJX - Gem & Jewellery Exchange
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09-12 May 2024, Palexpo, Geneva, Switzerland Henn GmbH & Henn of London Ltd. - Booth: C50 GemGenève - Geneva International Gem & Jewellery Show
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26-29 October 2023, Messe München – Eingang Ost Henn GmbH - Hall A6 - Booth: P16 Munich Show - Mineralientage München
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11-14 May 2023, Palexpo, Geneva, Switzerland Henn GmbH & Henn of London Ltd. - Booth: E73 GemGenève - Geneva International Gem & Jewellery Show
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05-08 May 2022, Palexpo, Geneva, Switzerland Henn GmbH & Henn of London Ltd. - Booth: A31 GemGenève - Geneva International Gem & Jewellery Show
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26 November-05 December 2021, Grand Palais Éphémère - Champ-de-Mars - Paris - France Henn of London Ltd. - Booth: 10 La Biennale Paris
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24-29 February 2020, Doha, Katar Henn of London Ltd. - Showing with Al Majed Jewellery - Booth: C6 Doha Jewellery & Watches Exhibition
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04-09 February 2020, Tucson, Arizona, USA Henn GmbH - Booth: 4304 GJX - Gem & Jewellery Exchange
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25-27 October 2019, Munich, Germany Henn GmbH - Booth: B6.340 The Munich Show - Gemworld
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18-22 September 2019, Hong Kong, China Henn of London Ltd. - Booth: GH B13 Hong Kong Jewellery & Gem Fair - Hong Kong Convention & Exhibition Centre
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13-17 September 2019, Grand Palais - Paris Henn GmbH - Booth: B03 La Biennale Paris
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09-12 May 2019, Geneva, Switzerland Henn GmbH - Booth: H7 GEMGENÈVE - GENEVA INTERNATIONAL GEM & JEWELLERY SHOW
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20-25 February 2019, Doha, Katar Henn GmbH - Showing with the Al Majed Jewellery - Booth: C6 Doha Jewellery & Watches Exhibition
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05-10 February 2019, Tucson, Arizona, USA Henn GmbH - Booth: 4304 GJX - Gem & Jewellery Exchange
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26-28 October 2018, Munich, Germany Henn GmbH - Booth: Hall B6 - B6.340 The Munich Show - Gemworld
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14-18 September 2018, Hong Kong, China Henn of London Ltd. - Booth: Grand Hall - GH/B16 Hong Kong Jewellery & Gem Fair - Hong Kong Convention & Exhibition Centre
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12-16 September 2018, Hong Kong, China Henn GmbH - Booth: AWE Fine Gem Pavillon - 9K22 Hong Kong Jewellery & Gem Fair - AsiaWorld-Expo
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10-13 May 2018, Geneva, Switzerland Henn GmbH - Booth: D3-3 GemGenève - Geneva International Gem & Jewellery Show