10 pound lots of gemmy RARE rainbow velvet obsidian from Mexico with all the blue velvet sheen this material is famous for.You have to see it to believe it (the picture does not show the velvet background well but you can get an idea of the rainbow coloration and the pieces pictured were chipped and washed in order to show the coloration which is how you work with this material in order to orient for best effect) and for those of you who have,this is some of the last of this wonderful obsidian,who knows if any more will be found.The rainbow colors are magnificent on the blue velvet sheen background.The pieces range in size from approximately 2 inch to 4 inches wide and long and 1 to 3 inches deep.Each 10 pound lot will be scooped from material like pictured,,the picture is of a couple pieces that were broke open to show the blue velvet sheen on the nice glassy surface of the inside after a break,much like the polished surface of a finished piece, but the rough is not broken open and is just as it comes from the earth,,and the number of pieces will vary depending on size of individual pieces with lots containing 25 to 75 pieces generally.In the event you have not worked with this material prior you may email us for suggestions on orientation to get the best results.