Today the most popular color is blue zircon. Most blue zircon, which is considered an alternate birthstone for December, is a pastel blue, but some exceptional gems have a bright blue color. Zircon is also available in green, dark red, yellow, brown, and orange. Zircon is one of the heaviest gemstones.
Zircon symbolizes healing, and has a wide range of healing applications. It has an anti-spasmodic effect on the liver and gall bladder, it has a calming effect on asthma and allergies, and has a beneficial effect on lunch, bronchial, cold and general respiratory problems. It helps it's wearer to overcome loses, heals mental disturbances and promotes common sense.