Lucara Diamond Corporation president and CEO Eira Thomas sits for a photograph in Vancouver, Canada, where the Southern Africa-focused diamond mining company is headquartered. A geologist with decades of experience, Thomas has held a number of board positions on diamond mining companies over an extended period. Lucara radiates an unusual sparkle in also having two other female directors in Marie Inkster and Catherine McLeod-Seltzer. According to data compiled by Bloomberg from companies that supply a gender breakdown, only one in 20 global mining companies is women-headed.