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Cape Lines


Diamonds with a significant depth of yellow body colour of natural origin frequently show a characteristic absorption spectrum when examined with the spectroscope. Since yellow stones are sometimes known as "Capes", the absorption lines are often called "Cape Lines". Capes that fluoresce blue, often show a strong band at about 4155 A.U., a fairly strong qt4780A.U.; and four weaker lines between these two.

Yellow Diamond