Diamond treatments in the 14th Century were known to be an art form that significantly increased the value of the diamond. It was first in the early 14th Century when the true polishing and cutting to create new facet arrangements and shapes where thought to evolve (Balfour, 2000). As cutting technology advanced, it was natural that the diamond manufacturers learned how to improve the brilliance and color of a diamond. As a result is probable that a variety of coating techniques soon emerged.

In ancient India, diamonds were items of tremendous cultural and religious significance. Therefore, altering them in any way was considered taboo. Colorless stones were held by only those of the highest caste, and with this, there would have been great economic incentives to enhance a diamond that was not colorless. However, it is probable that there was strong sentiment against altering a stone's color. Although many jewelers do not advertise it, today 90% of emeralds and many sapphires are enhanced to show more brilliant hues. Hadar Diamonds discloses the purity of all it's stones upfront with proper documentation.