This 1.3-carat kornerupine gemstone is a prime example of the bluish-green color that gives the gemstone the most value. It's ...

Then, High-Value Semi-Precious Gemstones consist of gems like tanzanites, opals, pink sapphires and paraiba tourmalines. Lastly, semi-precious stones include topaz, peridot, amethyst, and more.

The growth in the value of colored gemstones can be attributed to three major factors: 1. Increased Consumption: A decade ago, the US was uniquely the largest market for colored gemstones.

Choosing a colored gemstone can give you more impact for your money. Not only do sapphires, emeralds, and rubies offer breathtaking beauty, but they also hold strong investment value.

The irradiation of gemstones in research reactors is a widespread practice, carried out to enhance their colour and increase their market value. The IAEA works with national regulators to ensure this ...