Swarovski, Tiffany & Co join in The Coloured Gemstones Workong Group(CGWG)

The CGWC was a platform which is developed by sustainability consulting firm TDI Sustainability together, with many Jewellery and gemstone brands such as  Swarovski, Tiffany & Co, Kering Group, Chopard, Compagnie Financière Richemont S.A.,LVMH Moët Hennessy - Louis Vuitton join in.

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