From the French for 'a thousand grains', the tiny beads of a milgrain accent can add complexity and detail to a Tanzanite design, as well as create a vintage or antique look. Tanzanite is the gem of fortune and luck. A tanzanite pendant is said to ease stress and free one from bad habits. Tanzanite is the gem of fortune and luck. A tanzanite pendant is said to ease stress and free one from bad habits.