Designer ring with blue acrylic glass and brilliant-cut diamond of approx. 0.1 ct,

Designer's ring with blue acrylic glass and brilliant-cut diamond ca. 0.1 ct, ca. RW (G)/SI, inner ring made of fine gold 24K, setting made of 18K yellow gold, 19.2 g, ring size 54, 20th/21st century, signs of wear, unknown maker's mark.