Iwami ware

Iwami ware (石見焼, Iwami-yaki) is a traditional Japanese stoneware produced in Gōtsu and its surrounding areas in Shimane Prefecture. Known for its sturdy structure, high durability, and practical designs, Iwami ware has long been associated with utilitarian vessels such as water jars, sake bottles, and storage pots.

History

Iwami ware originated in the late Edo period, around the 18th century, when potters in the Iwami region began producing large ceramic containers to meet the growing demand for water and food storage. The region’s clay—rich in iron and resistant to heat and salt—made it particularly suitable for strong, functional stoneware.

By the Meiji period, Iwami ware gained recognition for its exceptional quality and was distributed widely throughout western Japan. Its production was closely tied to maritime trade routes along the Sea of Japan, and many pieces were used on ships or in coastal households for practical storage purposes.

Characteristics

Iwami ware is stoneware, typically fired in climbing kilns (noborigama) at high temperatures. Its key characteristics include:

• Thick-walled, durable body made from iron-rich local clay.
• Salt-resistant glazes, allowing for use in marine environments.
• Natural ash or iron glazes in subdued tones such as brown, gray, and green.
• A balance between simplicity and strength, prioritizing utility while maintaining quiet beauty.

The pottery often features a distinctive amber-brown surface with variations caused by kiln atmosphere and natural ash effects. Typical products include kame (large jars), tsubo (storage pots), and donabe (cooking pots).

Modern Development

Today, Iwami ware continues to be produced in Gōtsu City and nearby towns. Artisans preserve traditional kiln techniques while also exploring new forms suited to modern lifestyles. The long tradition of crafting large vessels remains central to the identity of Iwami ware, making it one of the few Japanese ceramic traditions where such pieces are still produced in significant numbers.

In 1972, Iwami ware was officially designated a Traditional Craft of Japan by the Ministry of Economy, Trade and Industry (METI).

See also

• Hagi ware
• Izumo ware
• Japanese pottery and porcelain

References

1. Japan Traditional Kōgei Association. Iwami-yaki (Iwami ware).
2. Shimane Prefecture Cultural Heritage Records.
3. Nihon Tōgei Taikan (Encyclopedia of Japanese Ceramics).