There really is a class of gems that are titled “phenomenal” and they happen to be favorites of many of the artist-jewelers making original work today in their studios. The gems include ladradorite, opal, star sapphires and rubies, moonstone, alexandrite and cat’s eye gems. These phenomenal gems exhibit unique optical properties, from iridescence to stars to changing lights akin to the Aurora Borealis. We wonder if our ancestors considered them magical, and we still are drawn to them for their cosmic metaphorical power, suggesting moonlight and sun, rainbows and stars, shifting colors and play of light.