Vintage 925 sterling silver Modernist Brutalist Mid-Century Modern ring

Vintage handmade sterling silver ring. With sapphire-like blue and clear stones. Not sure what they are. Could be crystals or CZ. Modernist Brutalist Mid-Century Modern (MCM) style. Size 5.5. The band looks like it used to be gold plated, with most plating worn out. Otherwise in excellent condition. Stamped "Silver", also was professionally tested as 925 sterling silver.