5.90ct Mexican Fire Agate, Multidirectional BrightnessLoose Gem Grade Fire Agate Ideal for setting into a ring or pendant, this 5. 90 carat Mexican fire agate displays a bubbly, botryoidal pattern of bright green colors with blue overtones that can be seen from a multitude of different angles. Secondary undertones of yellow, orange, and red colors can also be seen depending on the light and angle; surrounding the iridescent core of color is a durable rind of brown chalcedony quartz. For additional pieces