8mm natural moss agate gold plated spacers Saint Benedict of Nursia/San Benito. The spiritual meaning of Moss Agate is all about new beginnings. This gemstone is said to promote growth, fertility, and abundance. It can also help you to manifest your goals and dreams by boosting your creativity and optimism. Moss Agate is also a protective stone, which can shield you from negative energy and help to keep you grounded. Why Would You Use Moss Agate? Moss Agate can create harmony in your life. If you feel like everything is a mess at work and with your personal life, this crystal can help you make sense of things and figure out just what you need to do. Moss Agate Birthstone Moss agate is the birthstone of the springtime and can be applied to anyone born between April 20th and May 20th. Moss Agate Zodiac Sign The zodiac sign assigned to the moss agate is Gemini. The Gemini is an adaptable and communicative sign. They are lively, talkative, and entertaining. Gemini people are highly intelligent and are very quick with their wit or with being on their feet.