In a report investigating human rights violations in jewellery supply chains Human Rights Watch cites diamonds from Zimbabwe and Angola but fails to mention diamonds from Israel.

Tiffany & Co was set to appear at Ethical Corporation’s Responsible Business Summit USA 2016, but disappeared from the schedule after the jeweler’s ties to an Israeli supplier which funds a unit of the Israeli military came to light.

For the past two weeks people have been bombarding Tiffany’s Facebook page with questions about the company’s funding of Givati Brigade, a unit of the Israeli military that has been accused of war crimes.

Revenue from a Tiffany’s supplier, the Beny Steinmetz Group Resources company, is channelled via the Steinmetz Foundation to the Israeli military which stands accused of war crimes and possible crimes against humanity by the UN Human Rights Council. Sean Clinton writes, “While Tiffany & Co’s efforts to promote ‘responsible mining’ and prevent ‘conflict diamonds’ from entering their supply chain are laudable, the failure to fully secure their supply chain means that diamonds linked to gross human rights violations in Palestine can still infiltrate their supply.”