Opals come in many different colors, which symbolizes the somewhat uncertain nature of October as a month. Some Octobers will be warm and pleasant: others will bring in winter and cold weather. Harvest times are often connected with this month, as are the frightful connections with Samhain and Halloween.

The opal, therefore, is designed to protect those born in this month from evil or difficult moments. Those born in this month are often somewhat similar to those born in September, but they have a more spiritual and searching side that makes them roam further from their home.