Common Gemstone Treatments
Below is a quick notice of the above gemstones and their color alteration treatments
· Aquamarine is usually heat treated to enhance its color from a light blue to a deeper and desirable shade. It helps in removing any unwanted greenish tint or undertone to achieve a bluish shade.
· Diamond is usually radiated with a technique different than heat treatment. Radiated diamonds display a brilliant white sparkle from what it usually shows an off white color. There are many fancier colors like green, yellow, etc.
· Ruby is usually diffusion-treated gemstone when it gives a faint red or pink color. To intensify its shade, chemicals (same shade coloring agents) are coated over the surface of the gemstone. Then those specimens are heated for a stretched period. Just the core remains colorless.
· Sapphire, generally found in abundantly alluring colors like yellow, pink, green, blue, etc, is also heat treated. Most demanded is the blue sapphire. Heat transferred at specific temperature lightens or intensifies its color. It usually uniforms the gem color. They sometimes undergo diffusion treatment.
· Emerald is commonly oil filled. Emerald is rarely seen without any flaw, i.e. without any internal fine cracks. Therefore, they are filled with same tinted oil to enhance uniformity. Otherwise, they make the gem look unacceptable with whitish cracks displaying.
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