New vintage silver colourful harlequin cloisonné ring

New vintage silver colourful Harlequin cloisonné ring Cloisonné enamel in HARLEQUIN diamond shapes and triangles. Pearlescent shimmer. And sort of crackle textures. Red, aqua or turquoise blue, white, pale apple green, purple, orange, royal blue. 6 mm wide enamel section. Almost 7 mm wide ring. Larger than size 5 but just smaller than size 5.5 New vintage c. 1970s. Artistic Jewellery Canada (Canadian company). Hallmark: “Alpha Sterling 925”