High brilliance flashes of fiery red. Brilliant background of green with gold. Top band of shining slate lilac-grey. Mirror image split pair of boulder opal rubs. Great for cutting to a set of gemstones. Sliced thick to allow for optional drilling. High density ironstone host rock from Winton. Solid natural rough boulder opal, sliced on saw. Approx. sizes: (1) 20 x 15 x 12 (2) 20 x 15 x 15 mm Approx. total weight: 17.2 Grams (86 Carats) Photos taken under indoor white light.
