Erstwhile Studios, LLC. is a spiritual and metaphysical business in Sioux City, Iowa, founded by owner Amber Smith. The business presents itself as a place where practitioners of different spiritual beliefs and skill sets can seek knowledge, share wisdom, and be part of a like-minded community. In addition to carrying metaphysical goods such as crystals, herbs, books, pendulums, and tarot decks, Erstwhile Studios describes itself as more than a crystal shop, with a focus on supporting spiritual practice and helping others navigate their paths.