Fundamental Rockhound Products: Glendonite Crystal Mineral Specimen Calcite Pseudomorph After Ikaite Beautiful crystal cluster of Glendonite. Some matrix on the piece Specimen measures 1 3/8" long x 1 3/8" wide x 1 1/4" high Specimen is from the Kola Peninsula in Russia For information about Glendonite, please see description below: