These two opals were cut from the same piece - a boulder opal from the Yowah fields in Queensland. Separated for purchase but would make a nice large piece of jewellery. Both have beautiful dark ironstone with light brown pattern. Red orange flash pattern with blue and green. B1867a is the large piece on the left. Width 13mm to 23mm, length 45mm, thickness 5.4mm. Weight 60.45carats.