What does it mean when a gemstone is irradiated?

The gemstone irradiation is a process in which a gemstone is artificially irradiated in order to enhance its optical properties. High levels of ionizing radiation can change the atomic structure of the gemstone’s crystal lattice, which in turn alters the optical properties within it.

Are irradiated gemstones safe?

The NRC has no reason to believe that wearing irradiated gemstones can be harmful. There have been no reported cases of anyone being harmed by wearing them or any other irradiated gems.

Which stones are irradiated?

What Gemstones Are Commonly Irradiated?

  • Topaz (colorless before treatment. Blue after treatment)
  • Diamond (Colorles to Green / Blue)
  • Pearls (Light color to Gray-Blue)
  • Quartz (Colorless / Yellow / Pale Green to Brown / Amethyst / Smokey / Rose)
  • Tourmaline (Colorless to Yellow / Brown / Pink / Red)


Are irradiated diamonds worth anything?

If you like colored “fancy” diamonds, but can’t afford the price, then irradiated diamonds are a great choice. Don’t forget, these are still real diamonds, and the value of the diamond is not sacrificed with this treatment, if anything it is enhanced.

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What does it mean when a gemstone is heated?

Heating is used to either lighten, darken or alter the color of a gem. Amethyst is heated to lighten its color. Heat a little more and some sources of amethyst will alter color from deep purple to orange colored citrine. … Upon heating the gem is left with the blue and violet we know as tanzanite.

What is the most dangerous gemstone?

Crocidolite, also known as blue asbestos, is considered by many to be the world’s most dangerous mineral.

Which gemstones are toxic?

Gemstone Toxicity Table

Name Toxicity Risk Hazard
Chrysocolla Low Silicosis
Chrysoprase Low Silicosis
Cinnabar High Mercury; Can react dangerously if accidentally swallowed
Citrine High Silicosis

Is Rose quartz irradiated?

Quartz crystals of a similar color are called pink quartz. The color can vary from a very bright pink to almost purple. Rose quartz is usually very evenly colored. … Irradiation (both natural or artificial) of rose quartz can lead to the formation of additional smoky quartz centers and according alterations in color.

Is Blue Sapphire irradiated?

Irradiation has been with us since the early 1900’s when scientists like Bordas and Crookes used radium salts to change blue sapphires and diamonds green. … Most notably, Diamonds, Beryl, Pearls, Topaz, Yellow Sapphire, Amethyst and Tourmaline. The process by which irradiation changes color is fairly straightforward.

Is Tiger’s Eye dangerous?

It is not dangerous, it never will be dangerous. Tiger’s eye, like the much-maligned onyx, is actually a gemstone of pure good, because of its strong affiliation with the Earth, Sun, and the elements of Air and Fire.

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How can you tell if a diamond has been irradiated?

Irradiated diamonds come in blue, green, canary yellow, or even pink as well as many other colors. Because this process is permanent, the G.I.A. will grade and certify irradiated diamonds and can also laser inscribe the diamond to notify any potential buyer that the diamond has been irradiated.

What is the rarest color of diamond in the world?

Red diamonds are the rarest of the colored diamonds, with only 20-30 existing in the entire world. They get their beautiful red color from a rare process during their formation, which changes the crystal structure of the diamond and causes light to pass through it differently than colorless diamonds.

Are Black Diamonds irradiated?

Treated color black diamonds can be irradiated so they appear black but they’re actually a very dark green color or they can be subjected to low pressure, high-temperature annealing which induces large-scale graphitization within surface-reaching fractures.

How are gemstones heat treated?

High pressure, high temperature (HPHT) treatment

– Heating a diamond to high temperatures under high confining pressures to remove, or change its color. Heating diamonds at high pressures and high temperatures can remove or lessen their brownish coloration so the gem becomes colorless.

What gemstones can take heat?

Gemstone That Can Take Heat

Gemstones that can generally take heat from soldering and casting in place are: Diamond, Ruby, Sapphire, Garnet, Cubic Zirconia and Various lab grown colored gemstones.

Are heat treated sapphires bad?

Once considered completely useless, this corundum (sapphire) has been treated in a sophisticated heating process that radically changes the color and clarity so that it becomes a mix of pink sapphires and rubies. These stones are now considered of saleable quality.

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