48 ct rough opal piece for carving 42mm across

2.78 ct black opal 11.5x10x4mm

3.22 ct gem flag harlequin pattern black opal 12x9x4.5mm

4.63 ct black opal 14x9x6mm

4.41 ct semi black opal 14.8x12x4mm

5.49 ct semi black opal 13.5x12.5x5mm

1.84 ct high domed gem black opal 9x7x5mm

6.33 ct crystal opal 14x10x7mm

3.10 ct drop shape black opal 11.5x9.5x4.5mm

11.71 ct black opal 21.5x15x5mm

2.50 ct crystal opal 12mm Round

2.13 ct light opal 11x8x3.5mm

2.14 ct crystal opal 10.5x7x5mm