Year-on-year diamond prices for January 2021 bounced 1.5 per cent, breaking through the x-axis for the first time since April 2019. They'd been hovering just below zero since October 2020 and last month came exactly in line with prices for the previous year. They were badly hit by the pandemic in March and April, when they were 4.8 per cent down, but have rising in fits and starts ever since.IDEX Online subscribers please click here to read the full report