Opal mine rough crystal with precious fire from the Welo region of Ethiopia. Fire colors include reds,blues,.violets,greens,yellows and size runs approximately 10 to 20 mm in length by 4 to 10 in depth and width, nice chunky pieces just ready to facet or cab without much waste.Each winner will receive 15 carats scooped from material as pictured and picture was taken dry.The number of pieces per lot will vary depending on the size of individual pieces but generally lots should contain 1 to 4 pieces.