From the French for 'a thousand grains', the tiny beads of a milgrain accent can add complexity and detail to a Opal design, as well as create a vintage or antique look. Opal symbolizes confidence, clarity, and calmness and is said to promote faith in oneself and hope for the future. Wear an opal pendant to capture these qualities. Opal symbolizes confidence, clarity, and calmness and is said to promote faith in oneself and hope for the future. Wear an opal pendant to capture these qualities.