| Some of treatment procedures are centuries old, | | | | this way makes less surface inclusions. So we can |
| while others are relatively new. Gemstone are | | | | concluded that colored oils are used on those |
| treated in different ways to improve their | | | | gemstone to improve their appearances. This |
| appearance. Some of these procedures are | | | | treatment reduces fractures and provide better |
| centuries old, while others are relatively new. Also, | | | | clarity. Heat treatment is the most common form |
| by cutting or polishing gemstone could have | | | | and famous enhancement. This is so common |
| fabulous colors and nice sparkle. Treatment or | | | | with corundum, ruby and sapphire, it is |
| enhancement gemstones means any process to | | | | recommended that jewelers inform their |
| make natural gems improved gem's color, clarity | | | | customers that they are "probably heat treated". |
| before cutting and polishing. Please understand | | | | Heating can cause color of a stone to darken, |
| that TREATMENT AND ENHANCEMENT has | | | | lighten, or even completely changed and can also |
| nothing to do with man created gems or | | | | improve gems clarity and brightness. Heating of |
| synthetic gems. Treating and enhancing gemstone | | | | most kinds of gemstones is a standard treatment |
| is a very common step to improve gems | | | | procedure. Heating knowledge was passed over |
| appearance. Some treatment and enhancement | | | | generations. Heating Methods vary from simply |
| improved by nature are permanent and cannot be | | | | burning method to highly techniques under |
| detected. Treatment and enhancement procedure | | | | regulate temperature (More knowledge at |
| so closely resembles what happens in nature, that | | | | Diffusion is an enhancement method, commonly |
| one cannot always tell if they have been treated | | | | used on corundum, added iron and titanium during |
| after mining or before. Microscopic examination will | | | | the heating process of the gemstone, sometime |
| sometimes reveal an inclusion that burst during | | | | called surface diffusion. Diffusion layer created by |
| heating treatment, but lacking that there is no | | | | adding elements. This layer described as colored |
| way to tell exact that heat treatment was done | | | | coating. Radiation enhancement or irradiation |
| before or after mining. There are many | | | | means pounding material with subatomic particles. |
| techniques of treated or enhanced gems (More | | | | In some case, irradiation is followed by heating to |
| knowledge at Briefly explanations of the important | | | | produce a better or new color for the gem - such |
| techniques is given below. | | | | as topaz. Today so many irradiation technique |
| Oiling treatment method has been used form | | | | applied and has created shades that cannot found |
| more than hundreds years, mostly emerald | | | | in natural topaz. Same way in tourmaline, |
| treated to derive its beautiful green color and | | | | irradiation can turn dark pink stone into red. For |
| clarity. In the same way, other colored stones | | | | diamonds irradiation and heating can turned them |
| such as alexandrite and rubies have been treated | | | | into browns, blues, yellows, pinks and greens. |