Materials and Features:

• Premium Translucent Honey Amber Matrix: High-density historical French cellulose acetate (Rhodoid) sheet stock formulated by G. Convert SA. The base material features a warm, translucent honey-amber coloration that offers beautiful subsurface depth and produces a distinct, musical marble-clank resonance.

• Opaque Tortoiseshell Stone-Chip Inclusions: Embedded with a high-density suspension of sharp-edged, multi-tonal black, yellow, and crisp white shards. These opaque geometric fragments mimic rare mineral-chip tortoise mosaics, creating a dramatic three-dimensional contrast when held against direct light.

• Press-Molded Fluted Ribbed Fan Architecture: Expertly engineered with a dynamic, fluted ribbed fan motif featuring a distinct lopsided thickness profile. The design graduates smoothly from a dense 5mm center ridge down to 3mm and 2mm tapered corner flanks, maximizing light transmission along the thin perimeter walls.

• Counter-Sunk Recessed Hardware Engineering: The flat interior back-facing walls feature custom mechanical counter-sink routing. The non-magnetic silver-tone earring posts are mounted flush inside these recessed round sockets, providing flat, comfortable alignment against the earlobe.

Type: Asymmetrical fluted ribbed fan-silhouette post earrings configured for pierced ears.

Age/Origin: Circa 1950’s / Oyonnax, France (G. Convert SA Industrial Works)

Marks: Unsigned Factory Original (Verified via the distinct 5.8g combined pair weight, characteristic lopsided geometric carving profile, and signature mechanical counter-sunk hardware assembly footprint).

Other: These earrings represent a stellar example of mid-century industrial technical polymer mastery from the historic Oyonnax valley. The pairs feature a flat back-facing profile with meticulously polished, comfort-rounded rims. The components have successfully passed comprehensive structural screening, showing a completely negative chemical reaction to Simichrome testing and producing zero phenolic or camphor odors under localized thermal testing, confirming an immaculate, non-degraded cellulose acetate structure.

Measurements:

• Weight: 5.8g (Combined pair mass; exhibits a premium hand-heft relative to scale)

• Dimensions: Height: 1.375" (32mm) | Width at Widest Point: 1.0" (25mm) | Thickness: 5mm center tapering to 3mm and 2mm edges

Condition: Excellent condition. The translucent honey-amber polymer and sharp tortoiseshell stone-chip shards remain incredibly vibrant, clear, and entirely free of internal material clouding or UV-induced fading. The high-gloss exterior fluting is structurally immaculate, retaining a uniform, mirror-bright buffed sheen across all faces. The non-magnetic metal posts and backing plates are firmly seated within their factory recessed grooves with zero structural shifting, chemical degradation, or loose alignment. The pair shows no wear at all and remains in immaculate condition.