Chaban Technical Design Plan for Earrings and Brooch

This item is a detailed technical drawing and jewelry design plan on heavy-gauge paper or cardstock, dated December 2025 by the designer Chaban. The document features orthographic and perspective renderings of fine jewelry components, specifically an earring at a 2:1 scale and a brooch at a 1:1 scale. The drawings indicate complex structural elements including a fan-like or radial pavé setting and curved armatures, likely intended for fabrication in precious metals like white gold or platinum with diamond accents. The layout includes specific measurements, notations in cursive handwriting, and a formal production stamp in the lower-left corner titled 'Plan de Fabrication.' The physical condition of the sheet appears excellent, with sharp edges and no visible creasing or staining, suggesting it is a master archival copy. The draftsmanship shows high-level professional quality consistent with luxury haute joaillerie design, featuring precise line work and shading to denote metallic reflections. The document serves as both a creative blueprint and a technical specification for gemstone setting and metal casting.

I have carefully examined the technical design plan by Chaban, dated December 2025. The document exhibits the high craftsmanship associated with master-level jewelry drafting. The rendering of the fan-like pavé settings and the professional layout of the 'Plan de Fabrication' suggest this was intended for a high-end atelier or haute joaillerie house. The paper condition appears pristine, with no oxidation or handling marks typical of workshop use, indicating its status as an archival master. The market for jewelry ephemera and technical drawings has seen steady growth among collectors who value the intersection of industrial design and luxury art. Comparables for signed, technical layouts of similar complexity typically range from $400 to $800, depending on the reputation of the house. The value is bolstered by the 2:1 scale detail which adds educational and aesthetic appeal. However, there are significant limitations to this remote appraisal. A physical inspection is required to verify natural paper aging, the presence of original graphite or ink vs. high-quality reproduction, and to confirm the authenticity of the Chaban stamp. Full authentication would also require provenance records tracing the document's origin from the designer's studio and a forensic check of the ink absorption into the fiber. Without these, this valuation assumes the piece is an original, hand-signed design document.