For sale is a wonderful oval shaped unmounted Opal. 6.75 ct. It measures approximately 3/4" x 1/2". It has been in my collection for over 20 years. It was purchased at the Tuscon Gem Show and was never mounted. It has gorgeous irridescence. There is a line going throught the top portion (see photos). You can feel it on the back not the front. It looks to be in good condition. I have tried to take good quality photos. I am not a dealer in jewelry. You be the judge. I have been collectin ...click for details
