Three Australian opals (4.80ct) approx 13 x 10 mm. strong reds dark tone, 11 x 4.5 mm strong play of colour 12.5 x 8.3 mm strong green yellows', approx 13 x 10 mm. strong reds dark tone, 11 x 4. 5 mm strong play of colour 12.5 x 8.3 mm strong green yellows