Important set comprising earrings, necklace, bracelet, ring in white gold, diamonds and opal

Earrings brilliant-cut diamonds for ct 5.80 approx., colour H, VS, opal max diameter 16.20, min diameter 13.26, h 2.47, of ct 2.70 each
Collier brilliant-cut diamonds for ct 14.50 approx., colour H, VS, large fancy opal max. diameter 41, min. diameter 29, h 7.70
Ring brilliant-cut diamonds to ct 1.60, colour H, VS, opal max. diameter 15.27, min. 11.27, h 4.82, of ct 3.0 approx.
Bracelet with half-cut diamonds for ct 7.50, colour I-J, SI, central opal max. diameter 20.29, min. 14.74, h 5.82, of ct 6.40, side opal max. diameter 16.15, min. 10.45. h 5.79, for ct 3.70 each