Art Deco 3.06ct Sapphire Octagon Ring vulcanite and the owner would have

and the owner would have a near-constant high quality food source

The clasp is a gold heart padlock with a slightly unusual closing mechanism (side release button)

however Peleus

The Cyrillic maker's mark and layout of the hallmarks was pointing me towards Russia

it's extremely well crafted with a good

Art Deco 3.06ct Sapphire Octagon Ring vulcanite and the owner would haveDATE: Art Deco, c. 1920 Exquisite Art Deco period single stone ring set with a deep blue natural sapphire in an octagonal bezel setting. A true unisex piece (likely originally intended as gents), it's size and heft are substantial, and the design is ultra Deco with angular shoulders and elegant engraved gallery. Marks indicate it's German, made in the 1920's. STONES Natural sapphire, 3. 06ct (calculated) MEASUREMENTS Width of band: 2. 7mm Rise off