Quartz from Naru Island, Nagasaki Prefecture, Japan

Help improve this record

No owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.

Classic specimen for this type of twinning in quartz, this a colorless gemmy Japan law twin quartz crystal. In very good condition.Naru Island, located within the Goto archipelago of Nagasaki Prefecture, Japan, is a historic and highly celebrated locality for mineral collecting, particularly famous for producing iconic Japan Law twin quartz specimens during the Meiji and Taisho eras of the late 19th and early 20th centuries. Geologically, the island and surrounding region feature complex volcanic and sedimentary formations where low-temperature hydrothermal fluids circulated through open cavities, creating the precise, stable environmental conditions required for quartz crystallization. Mineralogically, Naru Island became globally legendary for yielding world-class Japan Law twins, a rare crystallographic phenomenon where two quartz crystals intergrow symmetrically to form a distinct V-shape or heart-shaped tabular morphology meeting at an exact angle of approximately 84 degrees and 33 minutes. Historically, commercial and artisanal recovery of these prized specimens peaked over a century ago, and because the known productive zones are now exhausted or protected, authentic Naru Island twins are exceedingly rare collector treasures today.