Milky and soft-toned, chalcedony is read as gentleness, goodwill and calm between people. Old tradition gave it to speakers and peacemakers.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.