Difference between revisions of "Opal"
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[[File:62cts Brazilian Crystal Opal.JPG|thumbnail|Opal]] | [[File:62cts Brazilian Crystal Opal.JPG|thumbnail|Opal]] | ||
| − | '''Opal''' is a type of silica mineral. It is often valued as a jewel, although it is less valuable | + | '''Opal''' is a type of silica mineral. It is often valued as a jewel, although it is less valuable 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. |
[[Category: Birthstones]] | [[Category: Birthstones]] | ||
Revision as of 17:56, June 27, 2016
Opal is a type of silica mineral. It is often valued as a jewel, although it is less valuable 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.