Emeralds, by their very nature, usually comprise fissures and floor reaching cracks. To enhance their look and stability, a typical observe includes the introduction of oil or different substances into these imperfections. This course of enhances the gem’s readability and total visible enchantment by decreasing the visibility of those inclusions. Cedarwood oil, attributable to its refractive index being near that of emerald, is continuously used. The applying includes immersing the emerald within the oil underneath strain or vacuum, permitting the oil to penetrate the fractures.
This enhancement is critical as a result of it permits extra emeralds to be commercially viable. Untreated emeralds of gem high quality are uncommon and command significantly greater costs. The observe additionally helps to guard the stone from additional harm, because the oil acts as a buffer, stopping the propagation of current cracks. Traditionally, varied substances have been used for this goal, courting again centuries. Fashionable methods have refined the method, utilizing extra steady and long-lasting oils.
