Opal Gems: Value, Price, and Jewelry Information - IGS
https://www.gemsociety.org/article/opal-jewelry-and-gemstone-information/
WebThese striking stones are the traditional October birthstone and have inspired a rich body of folklore. (So rich, in fact, opal gems have been considered both the luckiest and unluckiest stones you can wear). Nevertheless, some scholars believe many ancient references to opal may actually have been to other gems, such as the iridescent iris agate.
DA: 72 PA: 88 MOZ Rank: 81