Length - 18 cm Width - 3,5 cm Weight - 83,5g The rainbow colors of natural mother of pearl are caused by the way light refracts and reflects off its layered structure, and the material itself symbolizes protection, purity, and emotional balance. Its meaning is also tied to its protective origin, as it forms to shield the mollusk from irritation. Gemstones are commonly treated to enhance color or clarity. This has not been researched for this specific item. Item will be shipped by registered mail with tracking number.