Seller of loose Mexican natural opals, untreated. I guarantee my stones with replacements and full refunds if opal cracks crazes or discolors resulting from no negligence of your own. I sell all carat sizes, shapes facets calibrated or not, base colors, all opalesencent intensities. All you need do is ask and i will get it for you. I sell on ebay on occation and have photos on photobucket and YouTube. Here are the URL's CUTTING AND PASTING THE LINKs AS URL ADDRESSes: http://s988.photobucket.com/albums/af7/omalya/?albumview=slideshow will take you to a ring that I have for sale. Are you interested in high end opals view this video of an opal of mine on You-tube URL is: http://www.youtube.com/watch?v=yRULNuAnmow Please call me Omar Ali phone number 559-441-3633. I live in Fresno California USA. I am willing to provide samples.