We sent them tourmaline RMs to make a custom block. May have to write them off as lost. Annoying.
Kristian, On behalf of all of us who run honest sales of calibration materials, I am sorry this happened to you. I hope you kept backup crystals. Dealing with SPI just marked the price up, all special orders were going to the same Astimex people anyway.
Philipp, John, and others:
It would be good for the senior scientists on this forum to ask SPI what happened to the collected materials. Some NIST glasses cannot be replaced at any cost. The cost of finding and assaying a new collection of minerals would be stupendous.