A BIG specimen of a pretty American zeolite - pastel peachy fans of lustrous heulandite, to 3.5 cm, from the Rats Nest Claim in Idaho. This is a major find for the species by worldwide standards and certainly produced the best in the USA. These came out in spurts in the last 10 years or so. This is a very good, large, aesthetic example and quite beautiful too. There are a few translucent calcites here as well.