Arizona Turquoise Cabochon 14x11 mm Approximately 6.51 Carat (GTG-AT-2)

Arizona Turquoise Cabochon 22x19mm Approximately 19 Carat (GTG-AT-1)

Ethiopian Black Opal Cabochon 12x8 mm Approximately 2.07 Carat (GTG-BOP-57)

Ethiopian Black Opal Cabochon 11.5x9.5 mm Approximately 2.62 Carat (GTG-BOP-56)

Ethiopian Black Opal Cabochon 11x8.5 mm Approximately 2.13 Carat (GTG-BOP-55)

Ethiopian Black Opal Cabochon 13x9 mm Approximately 2.89 Carat (GTG-BOP-54)

Ethiopian Black Opal Cabochon 12x8 mm Approximately 2.84 Carat (GTG-BOP-53)

Ethiopian Black Opal Cabochon 12x9 mm Approximately 3.24 Carat (GTG-BOP-52)

Ethiopian Black Opal Cabochon 13x8 mm Approximately 2.32 Carat (GTG-BOP-51)

Ethiopian Black Opal Cabochon 12x9 mm Approximately 2.93 Carat (GTG-BOP-49)

Ethiopian Black Opal Cabochon 11x8 mm Approximately 1.86 Carat (GTG-BOP-48)

Ethiopian Black Opal Cabochon 11.5x8.5 mm Approximately 2.16 Carat (GTG-BOP-47)

Ethiopian Black Opal Cabochon 10.5x8 mm Approximately 1.52 Carat (GTG-BOP-46)

Ethiopian Black Opal Cabochon 10.5x8.5 mm Approximately 2.31 Carat (GTG-BOP-45)

Ethiopian Black Opal Cabochon 10x8 mm Approximately 2.11 Carat (GTG-BOP-44)

Ethiopian Black Opal Cabochon 12x9 mm Approximately 2.25 Carat (GTG-BOP-43)

Ethiopian Black Opal Cabochon 10x8 mm Approximately 2.34 Carat (GTG-BOP-42)

Ethiopian Black Opal Cabochon 12x8 mm Approximately 2.62 Carat (GTG-BOP-41)

Ethiopian Black Opal Cabochon 11x8 mm Approximately 1.74 Carat (GTG-BOP-40)

Ethiopian Black Opal Cabochon 13x9 mm Approximately 2.57 Carat (GTG-BOP-39)

Ethiopian Black Opal Cabochon 10.5x8 mm Approximately 1.82 Carat (GTG-BOP-38)

Ethiopian Black Opal Cabochon 14x9.5 mm

Ethiopian Black Opal Cabochon 17x2.79 mm Approximately 2.79 Carat (GTG-BOP-35)