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Gemstone Treatments Gemstone Treatments

Gemstone Treatments



When people ask about the treatment of a Gem in jewelry what they don't realize is that they are really looking for is a perfect Gem which cost $5,ooo to $5o,ooo. They are looking for something they cannot afford or would not spend.

You should also know that almost all Gemstones have some form of treatment.


Why you should not concern yourself about the treatment of Gems !

Gem treatment is replicating what Mother Nature does and it does not take a thousand years. Many people miss out on an opportunity of acquiring nice gemstone jewelry because of treatment it may have.

The only time you should be concerned is when you are spending thousands of dollars on a gem or gem jewelry; that is called an investment.

When you are spending $100 -$200 you are buying eye appealing Jewelry that you can wear and look good. 

Remember: The human eye cannot tell the difference from one gem treatment to another. In fact some gems that are untreated are very ugly.

Note that almost all Gems have heat treatment and rubies have some filling or they would cost thousands of dollars.    see examples at bottom of page

Natural Gems & Man Made Visual consideration

A clear gem is one of two things: a very valuable and expensive Gem or a Man made stone.

Most Natural Gem are not clear; they have mineral crystals referred to as Inclusions cause by mother nature.Some you can see with the human eye and others require a microscope.

  • Natural gems form in the Earth. Treatments after mining don’t change their status as natural gems. ( Most gems we sells )
  • Natural attractive gems with no treatment ( rare and very expensive )
  • Synthetic gems are made under lab conditions that mimic natural formation processes, only greatly accelerated.

What you should know about Gemstone Treatments 

              Are they really such a bad thing.

Most Gems have some form of treatment

 Heat Treatment

Buyers should assume that Rubies and Emeralds have been heat treated. Heat Treatments are used to remove rutile inclusions and improve color, tone and Saturation. Mother nature does the same over time.

Since this treatment is not unlike natural processes that occur in nature,it does not negatively impact price or value of gems.

Diffusion Treatment

Diffusion treatment leaves a thin layer of color on the outside layer of the gem. It improves the color on transparent gems and can enhance asterism. This is a fairly common treatment for Star Sapphires and Star Rubies . Diffusion treatment is only seen when the stone is immersed in an RI liquid. Diffusion treated gems show color concentrations around the facet edges. This is subtle and its visibility can be washed out if your light is too bright. A untreated Star gem is not very attractive. This treatment is to enhance the star and will last forever. Cost of all natural untreated gems is not cheap $ 3,000 > 


Phenomenal Gemstones
In the gemstone world there are a special group of gems known as phenomenal gemstones. These are gems that exhibit special optical phenomena, including asterism (the star effect), chatoyancy (the cat's eye effect).
Since these phenomenal gems are fairly rare, they naturally attract the attention of buyers


Smoking Treatment

Smoke treatment is a relatively old method of stone treatment that has just recently been reinvented. 

The process involves wrapping opals into silver foil strips and slowly heating them, allowing the buildup of smoke inside the foil.

Carbon formed by the smoke, penetrates deep into the opal stone and stains the original color with deeper and darker tones. Smoke treatment is intended to give the opal brighter play of color, because the bright colors contrast better on darker backgrounds. 

Gemstone Filling

Buyers should assume that most Rubies and Emeralds have some Lead Glass filling. This process corrects minor defects in the gem and makes them attractive. The human eye cannot tell the difference. This makes it possible for most buyers who want these gems without paying many thousands of dollars. Unfilled gems  sell for $10,000 to $ 100,000.


Irradiation produces yellow and orange from light colored material. It is rarely used and, since it duplicates natural processes, it is undetectable.

 Did you know that the same Jewelry item on this page sells for $ 15,000 to $50,000.


Yes perfect Gems are rare and very expensive ! At Landeau we sell Gems that are not perfect but very attractive to give everyone the opportunity to own beautiful Gemstone Jewelry at affordable prices.  

                   FACT: The human eye cannot tell the difference from Gems                                    worth $200 or those that cost $15,000 to $ 50,000.        

 Advantage of our Jewelry: They are affordable and no need for               insurance or worry of losing them. 

             No one will know the difference without spending a fortune. 

        Examples of Gems with Minor Treatment - No Treatment would be                                                   double the price or more.