From a onetime find in Peru in the early 90s, this is said to be one of the very best specimens (the other being a famous thumbnail in the Ralph Clark Collection). This specimen, from the Peruvian subcollection of Cal and Kerith Graeber, is an attractive miniature overall and features two SHARP, LEMON-YELLOW crystals of 4.5 to 6 mm on edge. The helvites are sharply tetrahedral in form, and they are so sharp and colorful they look fake. It is a supremely good rarity, and a classic form Peru that is almost unobtainable.