Difference between revisions of "Opal"
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'''Opal''' is a type of silica mineral. It is often valued as a jewel, although it is less valuable the the diamond. It was once highly valued by the Romans. During the [[Middle Ages]], it was thought to bring good luck, but now is considered the opposite. It is the birthstone of October. | '''Opal''' is a type of silica mineral. It is often valued as a jewel, although it is less valuable the the diamond. It was once highly valued by the Romans. During the [[Middle Ages]], it was thought to bring good luck, but now is considered the opposite. It is the birthstone of October. | ||
Revision as of 19:48, February 15, 2016
Opal is a type of silica mineral. It is often valued as a jewel, although it is less valuable the the diamond. It was once highly valued by the Romans. During the Middle Ages, it was thought to bring good luck, but now is considered the opposite. It is the birthstone of October.