This material, sourced primarily from the Ellensburg area of Washington state, represents a specific type of chalcedony. Characterized by its distinctive blue hues and typically found in an unrefined, natural state, it is prized for its rarity and potential use in lapidary arts. Its color originates from trace elements present during its formation within volcanic host rocks. The uncut form often exhibits a weathered exterior, concealing the sought-after coloration within.
Its significance stems from its limited geographical occurrence and the aesthetic appeal of its unique color. This has led to its desirability among collectors and artisans alike. Historically, its discovery and subsequent appreciation have contributed to local lore and economic activity related to gem and mineral trading in the region. Its inherent beauty makes it suitable for creating distinctive jewelry and ornamental objects.