Ultra Rare Multi-Layered Cobalt Blue Sea Glass
This unique collector-grade piece offers a physical cross-section of early maritime engineering. To achieve a high-visibility navigation beam capable of cutting through heavy Pacific fog, historic glassmakers utilized a complex multi-layered technique. The internal golden-amber layer served as a dense optical core to concentrate the light source, while the thick, outer ultramarine jacket acted as a pure cobalt filter.
While this Multi-Layered Cobalt Blue Sea Glass remains a deep, striking blue when viewed directly, a deep ocean-carved canyon running across its surface reveals the hidden golden layer beneath the suede-like cobalt frost.
Every weathered edge, asymmetrical profile, and chaotic C-shaped impact fracture on this piece stands as physical proof of a multi-decade journey through the Sea of Japan breaker zone.
Product Details & Specifications:
- Size: Approximately 1 inch (Please look at all photos for exact measurements against the ruler).
- Thickness: Heavy, thick-walled industrial glass.
- Surface Texture: Deep velvet frost with prominent, natural C-marks under 10x magnification.
- Condition: As found. Each discovery has only been washed with fresh water and air-dried. No oils, artificial tumbling, or chemical finishes have been applied.
Discover the deep science behind this multi-layered discovery in our comprehensive guide: Secrets of Russian Cobalt Blue Sea Glass.
Ready to add a verified piece of vanishing Pacific history to your private collection? Click Add to Cart to secure this raw maritime artifact before it is gone forever.
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