Gemstone value of the stone. Some treatments are used widely because the resulting gem is stable, while others are not accepted most commonly because the gem color is unstable and may revert to the original tone. Heat can improve gemstone color or clarity. The heating process has been well known to gem miners and cutters for centuries, and in many stone types heating is a common practice. Most citrine is made by heating amethyst, and partial heating with a strong gradient results in “ametrine” – a stone partly amethyst and partly citrine. Aquamarine is often heated to remove yellow tones, or
The Way of Kings the magical talismans of priest-wizards (the gem encrusted gloves called Soulcasters) that convert matter into another form, such as stone into grain, or people into stone, and powered gemstone constructs known as fabrials, such as a fabrial that creates red light and heat to replace wood in a fireplace. Soulcasting and fabrials are typically only owned by the nobility. The nobility is also based on eye color, blue eyes being seen as the purest royalty due to the association with the legendary Knights Radiant, who had glowing eyes. The world itself has flora and fauna which is based on surviving