Mineral Shell - Skyward Dragon Kiln Wood-fired Jian Zhan (140ml)(SDM 2509-02-01)

Formed in a 100-meter Skyward Dragon Kiln through wood firing, this piece belongs to the mineral-shell (Kuangshi Bei) glaze category within Jian ware. The surface develops through natural mineral phase interaction under sustained high-temperature firing, rather than fixed pattern formation.

Using iron-rich local clay and a naturally occurring mineral glaze, prolonged flame exposure and shifting kiln atmosphere promote gradual separation and integration of mineral components within the glaze layer. The resulting structure forms within the glaze rather than on the surface, presenting a stable, subsurface mineral texture shaped directly by firing conditions.

Unlike oil-spot or yohen types that rely on distinct crystallization or optical contrast, mineral-shell glazes are defined by material integration and internal variation. The final result reflects the combined influence of heat path, ash interaction, and atmospheric change inside a long dragon kiln, making each piece inherently non-repeatable.

Each work is fully handmade and individually selected, representing a material-driven expression within traditional Jian firing systems.

Technical Specifications

• Kiln Type: 100-meter Skyward Dragon Kiln wood firing

• Firing Temperature: Approximately 1350 °C

• Firing Cycle: 20 days preparation, 3 days firing

• Firing Method: Oxidation–reduction firing

• Forming Method: Fully hand-thrown

• Trimming Method: Fully hand-trimmed

• Clay Source: Native clay from Shuiji Town, Jianyang, Fujian

• Clay Iron Content: ≥8%

• Glaze Type: Iron-based mineral glaze

• Glaze Source: Native mineral glaze from Shuiji Town, Jianyang, Fujian

• Crystallization Depth: Subsurface structure

• Glaze Category: Mineral-Shell (Kuangshi Bei)

• Work Attribute: Individually numbered piece

• Origin: Shuiji Town, Jianyang, Fujian, China

Details

• Diameter: 9.6 cm (3.78 in)

• Height: 4.9 cm (1.93 in)

• Capacity: 140 ml (4.73 fl oz)

• Weight: 230 g (8.11 oz)

• Note:

 – Capacity measured close to the rim; for use, fill about 70% full.

 – All measurements are taken by hand; slight variation may occur.

In the Box

• Natural Paulownia Collector’s Box

• Linen Cup Pouch

• Double-Layer Cotton Tea Towel

• Collector’s Brochure with Certificate — artisan-signed, sealed, and individually numbered

• Care Instruction Card