i cant be certain either about the small purple stone i have. i thought it was a yellow lake stone but looking over some pics i have of yellow lake stones. all the purple ones are of a darker purple. the color of my stone looks to be more inline with the vosgiennes but i never handle another vosgiennes stone before also the yellow lake stone comes in around 8k the vosgiennes is around the fineness of a YG escher i think modine posted a thread about his vosgiennes and it had green dots. as for my stone i still leaning towards a yellow lake stone