The "Imperial Jade Seal" (Yu Xi) Collector-Grade Four-Ribbed Masterpiece | 39.0mm x 36.0mm | YSFN-1301E

This listing is for the exact pair shown in the high-definition photos. Stock ID YSFN-1301E is an exceptionally rare, museum-tier matched pair of "Imperial Jade Seal" (Yu Xi) Four-Ribbed (Si Leng) walnuts. Featuring a highly coveted 39mm square footprint paired with the legendary cube-like geometry of a royal seal, this ultra-rare genetic miracle is ready for immediate shipping.

• Stock: 1 of 1 (Single Inventory / Investment Grade)
• Variety: Imperial Jade Seal (Yu Xi)
• Structure: Four-Ribbed Mutation (Si Leng)
• Dimensions: 39.0mm (Width) x 36.0mm (Depth)

[About the "Imperial Jade Seal" Lineage]

The Yu Xi, translating elegantly to the "Imperial Jade Seal," is one of the most culturally revered and historically significant varieties in high-end Wenwan circles. It earns its prestigious name from its distinct, majestic architecture: a completely square base, sharply defined vertical walls, and a flat, blocky crown that perfectly mimic the heavy jade seals used by ancient emperors to authorize imperial decrees. In Eastern culture, this variety serves as the ultimate talisman for absolute stability, supreme power, unyielding integrity, and grounded success.

[The Elite "Si Leng" Four-Ribbed Mutation]

While a standard walnut grows natively with only two ribs, an extraordinarily rare genetic anomaly yields the Si Leng—the Four-Ribbed mutation. This structural miracle splits the shell into four perfectly right-angled chambers, transforming an organic walnut into a sharp, geometric cube. Finding a single 4-ribbed walnut with accurate bone symmetry is a generational stroke of luck; matching a pair with identical, razor-sharp 90-degree corners and mirrored texturing is an extraordinary feat of master grading, placing this pair firmly into the highest echelon of investment-grade collectibles.

[Characteristics of YSFN-1301E]

• The Perfect Square EDC Geometry: Measuring a substantial 39.0mm in width and a streamlined 36.0mm in depth. This specific geometric ratio accentuates the blocky, cube-like "Jade Seal" aesthetic. The 39mm scale makes it the ultimate elite everyday carry (EDC)—sliding discreetly into a pocket while providing an incredibly solid, heavy-volume presence in the hand during rotation.
• Sovereign Architectural Posture: This pair flawlessly captures the defining traits of the lineage, showcasing an incredibly flat, table-stable base and four prominent, beautifully aligned vertical ridges that partition the walnut like a sculpted monolith.
• Dense, Complex Topography: The surface displays a highly organized, tight network of deeply pocketed ridges that offer exceptional natural traction and a premium, deep-tissue palm acupressure massage.
• Expert Aging Tip: Because the "Imperial Jade Seal" variety features prominent, sharp vertical ridges and deep corner valleys, we strictly recommend resting them in a sealed bag between handling sessions for the first month. This expert technique safely traps natural hand oils to ensure a flawless, even oxidation across all four flat faces—avoiding the use of gloves is critical to achieving a rich, uniform, and translucent red agate finish.

[Specifications]

• Variety: Imperial Jade Seal (Yu Xi)
• Structure: Four-Ribbed Mutation (Si Leng / Square Symmetry)
• Stock ID: YSFN-1301E
• Dimensions: 39.0mm (Width) x 36.0mm (Depth)
• Texture: Dense, blocky vertical ridges structured around a 90-degree four-chambered silhouette.
• Best For: Elite connoisseurs seeking a museum-matched 39mm four-ribbed miracle, offering a robust tactile weight and the ultimate cultural symbolism of imperial authority.