Blackstone is usually jasper that's permanently dyed a black color. Many associate blackstone with the healing properties of jasper. It is thought to be a protective and healing stone, and it is believed to bring good luck to the wearer in any type of struggle, mental, physical, or political. Blackstone is also said to amplify the metaphysical properties of other stones.

Agate is believed to bring protection to its wearer, increase courage and strength, relieve stress, balance emotions, alleviate insomnia, and bring about pleasant dreams. It is said to increase self-confidence, enhance concentration, improve memory, help with communication and public speaking, and fight addictions. It is reputed to foster honesty and trust. Agate is associated with the Zodiac signs of Capricorn, Aquarius, Gemini, and Libra. It is the mystical birthstone for the month of September, and one of the birthstones for the months of May and June. Agate is also given as a gift for the 12th wedding anniversary.