October 11 opal . Juan Sanchez. What does my mineral mean . to see a change of color. How hard is my mineral . 5.5-6.5. What can my mineral be used for. It can be used for jewellery . How much is my mineral. It could be worth a thousand dollars. Pictures of opals. Opals .
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.