Zirkon is a beautiful, natural gemstone with a high refractive index, strong dispersion and it is available in a broad color range - yellow, brown, orange, red, violet, green, blue, and colorless.
Marbode, in the 11th century, wrote that zircon was an excellent amulet for travelers and would ensure safety, rest and a warm welcome at the end of a journey.
Some later cultures attributed the stone with lending prudence in practical things (linked thereby to financial success).