Compact Layered-Ridge “Caterpillar” Wenwan Walnut Pair — 31.0mm x 36.0mm | MMC-SY1D1

Product Description

A distinctive “Caterpillar” Wenwan walnut pair with compact proportions, elongated bodies, and unusually dense layered ridges. Measuring 31.0mm x 36.0mm, the pair is relatively narrow in width but longer through the body, giving it a more elongated silhouette than a typical rounded Wenwan form.

The defining feature is the stacked, segmented ridge structure running across the shell. Dense folds rise in repeated layers along the body, creating a textured appearance reminiscent of a caterpillar’s segmented form. A strong central ridge gives each walnut additional structure, while the outer sides remain rounded enough to keep the pair balanced in hand.

Both walnuts are closely coordinated in length, body volume, ridge development, shell tone, and overall stance.

This is a one-of-one listing. The pair shown in the photographs is the pair you will receive.

Key Details

• Stock ID: MMC-SY1D1
• Variety: Caterpillar / Mao Mao Chong
• Dimensions: 31.0mm x 36.0mm
• Quantity: One matched pair
• Preparation: Professionally pre-cleaned and base-brushed
• Availability: One pair only

The Story of the Form

The collector nickname “Mao Mao Chong” literally means “Caterpillar.”

The name comes from the pair’s unusual natural surface structure. Instead of broad, widely spaced folds, the shells develop a dense sequence of smaller raised sections and layered ridges, creating a distinctly segmented appearance.

The form is further emphasized by the proportions. At 31.0mm x 36.0mm, the walnuts are longer than they are wide, giving them a more directional and elongated body. The strong central structure runs through this texture and helps organize the otherwise complex surface.

The result is a compact pair with a particularly unusual visual identity—small in size, but rich in texture and form.

Product Characteristics

• Caterpillar-like texture: Dense, repeating folds create a segmented natural appearance.
• Elongated proportions: 31.0mm x 36.0mm dimensions give the pair a longer, narrower silhouette.
• Strong central ridge: Pronounced vertical structure adds definition to each walnut.
• Layered natural folds: Closely packed ridges and recessed areas create substantial three-dimensional texture.
• Compact hand size: The 31.0mm width keeps the pair manageable despite its longer body.
• Well-matched pair: Both walnuts show closely coordinated proportions, ridge structure, shell tone, and overall stance.

Care

These walnuts have already been pre-cleaned and base-brushed. During the first month, store them in a sealed bag when they are not being handled, allowing them to acclimatize gradually to your environment.

Handle them with clean, dry, bare hands and brush the grooves gently with a clean, dry walnut brush. Because this pair has especially dense layered texture, take additional time to brush between the smaller folds and recessed sections.

Keep them away from water, oil, direct heat, and prolonged sunlight.

Specifications

• Brand: ZenWalnut
• Product: Wenwan scholar walnut pair
• Variety: Caterpillar / Mao Mao Chong
• Size: 31.0mm x 36.0mm
• Stock ID: MMC-SY1D1
• Preparation: Pre-cleaned and base-brushed
• Included: The exact two walnuts photographed