Yes, there is a major difference between the two in terms of quality. Australian Opals come in a rich bright hue with colorful fire flashes that remain forever. In contrast, the firebase in Ethiopian opals is slightly unstable and comparatively less intense.
As Ethiopian Opals are hydrophane in nature, they absorb moisture and lose their fire quickly during humid periods. Therefore, it is always suggested to buy the best quality Australian opals to maintain the charm and ensure the maximum astrological benefits.