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Tips on Buying Gemstones

Normally, the price of any gemstone is determined by: size, cut, quality (color/clarity/treatments), and type. Here are some questions to ask about qualityIs the stone is natural or synthetic?Are there any noticeable scratches, chips or inclusions?
Is the color even throughout the stone?

  • ·        How good is the color?
  • ·        If you are buying the stones for earrings or cufflinks, are the stones well matched?
  • ·        Has it been treated?

There are many ways that dealers treat gemstones. The savvy buyer asks lots of questions and hopefully tests the results. Here are some treatments to look for:


It is common to irradiate Aquamarine, London Blue Topaz, Emerald, and Diamond as well as other stones. This treatment brings out color and removes imperfections. Many dealers know if the stones they are selling have been irradiated. Honest ones will tell you if they are aware of the treatment.

Heat Treatment

Amethyst, Aquamarine, Ruby, Tanzanite and Topaz are often heated at high temperatures to enhance color. And due to that Gemstone looks like real Gemstone.


This is the most common treatment used. On clear stones, dye may be visible in cracks that are darker than the rest of the stone. Sometimes dye appears as a residue that rubs off or white patches. Lapis and Rose Quartz are commonly dyed. Amethyst and Citrine are often dyed. Black Onyx is permanently dyed in normal processing.


Jasper is often dipped in petroleum products to bring out color and to seal it. Emerald is oiled; turquoise is waxed.

Fake stones

Some dealers will try passing off fake stones instead of natural ones. There are fake stones for most gemstones on the market. Always ask what stone something is if you are not certain. Honest dealers will tell you. If a stone looks too perfect it may be fake, irradiated or dyed. We should avoid Laboratory made products are known as synthetics.

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One Comment

  1. sona kakkad says:


    this is sona kakkad…I found this information very useful..as i am interested in purchasing the gems..will take care of this information…thanx

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