Peregrine Diamonds Ltd. May 23 published an updated preliminary economic assessment at Chidliak that shows a substantial increase in the diamonds recovered and financial returns from an initial phase of development at this project in Nunavut.

In 2016, the company completed a PEA for Chidliak that envisioned a phase-1 mine that would produce an average of 1.2 million carats per year over an ini...