From the French for 'a thousand grains', the tiny beads of a milgrain accent can add complexity and detail to a Lab Emerald design, as well as create a vintage or antique look. Emerald is associated with Venus, the Greek goddess of love and beauty. They say an emerald pendant can protect lovers from unfaithfulness. A perfect stone for nighttime wear, a black onyx pendant looks elegant and stylish in white or yellow gold.