Ethiopian Opal Square RingGenuine stone in sterling silver band Size 8 October Birthstone Ethiopian opal is believed to be an emotional intensifier, enhancing the true nature of those who wear it. Some say it strengthens the will to live and shields the wearer against negativity, burning off karma. Stone shape and color may vary. Please note: any orders placed on Friday evenings, holidays, or weekends will be shipped on the next business day.