Set of two purple opal rough boulder opal rocks. Rock 1 shows an oval curved opal formation on main face. Rock 2 has multiple opal seams and deposits on two faces. Traces of potential additional internal seams to explore. These rocks are ideal for practicing boulder opal cutting. Ironstone host rock mined at famous Winton opal fields. Mine Area: Central West Queensland, Australia. Total weight approximately 355 grams. Sizes approx. (1) 8 x 6 x 3 (2) 6 x 4 x 3 cm. Some photos in outdoor daylight, as-mined dry condition. Some photos wet to simulate polishing potential of the opal.
