Royal Aztec purple lace is a vein-agate discovered in the 1960ies near to Rodeo in the State of Durango in Mexico. It is showing a pretty blue-violet color, which rarely is accented by yellow and orange tones. Often, a cavity filled with macro-crystalline quartz shows inside of the veins. This material is available no longer in good qualities on the market.
Jeffrey Anderson is describing this location on his website dwarve´s earth treasures.