Gemstone Enhancements

Isadora’s Coloured Gemstone Enhancement Policy

Isadora offers consumers only the highest quality, authentic gemstones. Our colored gemstones undergo rigorous internal inspections by trained gemmologists to ensure they meet our stringent quality standards.

Due to their rarity and unique visual properties, nearly all colored gemstones sold at fine jewelers, including Isadora’s, are enhanced using various techniques. Many of these techniques have been used for centuries. Colored gemstones that have not been enhanced are rare and command extravagant prices.

Our white and fancy-color diamonds are not enhanced in any way other than normal cutting and polishing. Black diamond fashion jewelry contains natural diamonds treated to create a unique black color.

Methods of Enhancing Colored Gemstones

Gemstones are a beautiful and valuable part of jewelry but sometimes lack color or clarity. Fortunately, there are a variety of methods that can be used to enhance the appearance of colored gemstones.

Heat Treatment

One of the most common methods of enhancing gemstones is heat treatment. This involves heating the gemstone to a specific temperature, which can cause the color to become more intense or the clarity to improve. Heat treatment is a relatively safe and reversible process, and it is used to enhance a wide variety of gemstones, including rubies, sapphires, topazes, and emeralds.


Another method of enhancing gemstones is irradiation. This involves exposing the gemstone to radiation, which can also cause the color to become more intense or the clarity to improve. Irradiation is a more permanent process than heat treatment and is not always reversible. However, it is a very effective way to enhance the color of some gemstones, such as amethysts and aquamarines.


Impregnation is filling the pores of a gemstone with a colorless substance, such as plastic or resin. This can help improve the gemstone’s clarity and make it more durable. Impregnation often enhances naturally porous gemstones, such as opals and turquoise.


Oiling is filling the surface-breaking fissures of a gemstone with colorless oil or resin. This can help improve the gemstone’s appearance by making it look more uniform and polished. Oiling is often used to enhance gemstones that are naturally included, such as rubies and sapphires.


Dyeing is a process of introducing coloring matter into a gemstone. This can be used to change the color of the gemstone or to improve the uniformity of the color. Dyeing is not as common as other methods of enhancing gemstones, but it can be used to produce some very striking effects.

Combination Treatments

It is also possible to combine two or more of these methods to enhance a gemstone. For example, a gemstone might be heat treated to improve the color, then impregnated to improve the clarity. Combination treatments can be very effective in enhancing the appearance of gemstones, but they should only be done by a qualified gemologist.

Tips to Consider Buying Enhanced Gemstones

If you are considering buying an enhanced gemstone, it is essential to be aware of the following:

  • Enhanced gemstones are still valuable but may not be as valuable as untreated gemstones.
  • The extent of the enhancement should be disclosed to the buyer.

The enhancement should be reversible, if possible.

It is also important to remember that not all enhanced gemstones are created equal. Some enhancements are more effective than others, and some can even damage the gemstone. It is always a good idea to consult a qualified gemologist before buying an enhanced gemstone.

Gemstone Care

Gemstones are a beautiful and valuable investment, but they must be cared for properly to maintain their luster and beauty. Here are some tips on how to care for your gemstones:


Most gemstones can be cleaned with warm water and mild soap. Avoid harsh chemicals or abrasive cleaners, as these can damage the gemstone. If your gemstone is particularly dirty, soak it in a mild soap solution for a few minutes before rinsing it off.


Storing them in a safe place is essential when you’re not wearing your gemstones. A soft cloth pouch or a jewelry box lined with a soft fabric will help to protect your gemstones from scratches and damage. Avoid storing your gemstones in direct sunlight or near heat sources, as this can fade the gemstone’s color.


When wearing your gemstones, it’s important to be careful not to bump or scratch them. Avoid wearing your gemstones while doing activities that could put them at risk, such as exercising, gardening, or doing housework.

Professional Cleaning

If your gemstones become heavily soiled or damaged, you may need to have them professionally cleaned or repaired. A qualified jeweler will be able to clean your gemstones without damaging them, and they may also be able to repair any chips or cracks.

Preventing Damage

There are a few things you can do to prevent damage to your gemstones:

  • Avoid wearing your gemstones in hot water or steam.
  • Avoid wearing your gemstones in harsh chemicals, such as chlorine or ammonia.
  • Avoid wearing your gemstones while doing activities that could put them at risk, such as exercising, gardening, or doing housework.
  • Store your gemstones in a safe place when you’re not wearing them

    If you have any questions about how to take care of your jewelry piece, please contact us today.