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 collecting jewelry as an investment for over 20 years. I have been an antiques dealer for over 20 years dealing in quality items such as Tiffany, English Cameo glass, fine art, sterling and coin silver, Doulton, rookwood, etc. Check back at our auctions. We will be listing other interesting items from our collection.