Screw-back earrings with snowflake obsidian or black and white agate trapezoid drops and gold-tone metal findings

Snowflake obsidian is a naturally occurring volcanic glass characterized by distinctive white or gray crystalline inclusions that resemble snowflakes, formed when cristobalite crystals develop within the black obsidian matrix during cooling. This stone has been valued since ancient times for both ornamental and metaphysical purposes, with cultures worldwide incorporating it into jewelry and decorative objects. Screw-back earring findings were particularly popular from the 1920s through the 1950s, before pierced ears became the dominant style in the 1960s and beyond. These earrings appeal to collectors of vintage costume jewelry, gemstone enthusiasts, and those interested in mid-20th-century fashion accessories. The combination of natural stone with period-appropriate findings makes them attractive to both mineral collectors and vintage jewelry aficionados who appreciate the craftsmanship and aesthetic of earlier eras.