How are gemstones treated?

Today, most gems are treated to improve appearance. Treatment processes can consist of heat, irradiation, dyeing, oiling, or other processes. Detection of these treatments may be easy to nearly impossible. Treatments should always be disclosed to the consumer.

What does irradiation do to gemstones?

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.

How can you tell if a gem is heat treated?

Heat treatment is a very risky process as many gems have inclusions that expand at a different rate and cause stress fractures, which then becomes an identifying characteristic of heated gems, particularly sapphire and ruby which can display halos around inclusions within the gem.

Is Amber treated with irradiation?

Irradiation is the process of using electromagnetic radiation to alter a gem’s color. … In today’s world, irradiation is routinely used to color a number of gemstones. Most notably, Diamonds, Beryl, Pearls, Topaz, Yellow Sapphire, Amethyst and Tourmaline.

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Can gemstones be harmful?

Most gems are perfectly safe to wear as jewelry stones. (Of course, some are more durable than others). However, a few gems — very few, like realgar and ekanite — may contain heavy metals and/or radioactive elements in amounts that could cause harm if worn. … Consult our table on gemstone toxicity to learn more.

Which gemstones are toxic?

Toxic Gemstones

Amazonite – contains Copper Angelite – will convert to Gypsum when immersed in water
Hematite (not toxic) – will rust in water Iolite – contains Aluminium
Lapis Lazuli – has Pyrite inclusions which contain Sulphur Lepidolite – contains Aluminium
Malachite – contains Copper Moonstone – contains Aluminium

Are irradiated gemstones safe to wear?

Well, it is true that a lot of gemstones are irradiated, but they’re completely safe to wear so you can relax a little bit! … The general answer is that gemstone color comes from the interaction of the stones with light – some colors are absorbed, some are refracted within the gem, and some are reflected.

What does it mean when a gemstone is coated?

Many gemstones have been routinely coated to improve or radically change their color for many years now. Topaz is a case in point. … It has the effect of improving the color. The treatment involves applying a coating consisting of cobalt, to pale Tanzanites in order to give them the appearance of fine stones.

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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Which gem is almost always visibly included?

This is why a gemstone’s species and variety is considered while judging its clarity. For example, gemstones like aquamarine, citrine, tanzanite, topaz and kunzite are typically eye clean while gemstones like emerald, ruby, sapphire and red tourmaline are almost always visibly included.

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.

How can you tell quality of tanzanite?

Tanzanite’s color can be a very bright, intense blue. In exceptional tanzanites, the color is an intense violetish blue with red flashes of pleochroic color coming from within the stone. Due to the gem’s strong pleochroism, fashioned examples typically show a mix of both blue and violet colors in a wide range of tones.

What is the most commonly fracture filled gem?

The most commonly encountered fracture-filled gems include: Diamond – Surface-reaching fractures are sometimes filled with high-lead-content glass. This reduces the visibility of the fracture, with the goal of enhancing the appearance of the diamond. The filled fracture is still present – it is just less apparent.

What is the luckiest stone?

Known as the Lucky Merchant’s Stone, citrine is very helpful in manifesting good luck. This gemstone will be especially helpful for prosperity when it comes to finances and business. Its usual color is yellow, and just like the sun, it brings energy to you to perform a money-making task to completion and success.

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Which gemstone should not wear together?

Do not wear pearl and rubies together i.e. do not combine the energies of the moon and sun. Do not combine Venus with Moon and the Sun. Hence do not wear diamonds with ruby and pearls. Do not combine cat’s eye (the element of Ketu) with crystals and stones that relate to Sun and Moon.

What gemstones are for protection?

Crystals for protection

  • Black Tourmaline. A powerful healer and protector. …
  • Obsidian. A great truth-teller. …
  • Amethyst. For serenity of the mind. …
  • Labradorite. For connecting the dots. …
  • Smoky Quartz. For organisation and pragmatism. …
  • Pyrite. For a spark of confidence. …
  • Carnelian. For feeling grounded. …
  • Citrine. For welcoming abundance.


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