Silver-tone cocktail ring with dark cabochon stone

This piece is a silver-tone metal cocktail ring featuring a prominent central dark cabochon stone, possibly glass or a semi-precious gem, showing greenish-brown tones and natural inclusions under the surface. Flanking the central stone setting are small, clear pavé-set accent stones, possibly rhinestones or paste gems, embedded in a stepped geometric shoulder design. The band and shoulders exhibit a textured, granular surface finish, giving it a somewhat industrial or mid-century modernist aesthetic. There are no visible maker's marks or hallmarks legible from this viewing angle, leaving the exact metal composition and maker unverified. The ring displays light surface wear and minor tarnish consistent with age and prior use. Stylistically, the piece shares characteristics with mid-20th-century costume jewelry or vintage men's/unisex statement rings, though this remains an unverified stylistic estimate based purely on visual presentation.

Based on what I can see in the photograph, this piece is a silver-tone metal cocktail ring featuring a dark cabochon stone with greenish-brown tones and small, clear accent stones in a stepped geometric shoulder design. The band exhibits a textured surface finish suggesting a mid-century modernist aesthetic. I can't verify from a photo the exact metal composition, stone identity, or whether the metal is plated. Furthermore, I cannot observe any visible maker's marks or hallmarks from this viewing angle, leaving the attribution unverified. My value estimate of $75 to $150 assumes the piece is a vintage mid-20th-century costume jewelry item in wearable condition with light surface wear and minor tarnish. General market demand for vintage statement costume rings of this style is modest, appealing primarily to collectors of retro fashion jewelry. If the item were to turn out to be a modern reproduction, replica, or merely made 'in the style of' vintage costume jewelry rather than a period piece, the value would likely decrease to the $20 to $40 range. To confirm authenticity, date of manufacture, and material composition, I would need physical inspection, hallmark verification under magnification, and potentially professional testing to determine the metal and stone types.