SiO2 - Silicon Dioxide
This form of Crypto crystaline Quartz contains inclusions of small crystals that reflect light and give a range of colors - depending on the nature of the inclusion. Hence aventurine may be green, greenish-brown, bluish-white, bluish green and orange. Aventurine claim to fame is having inclusions that look like sparkles. Extremely high quality aventurine (without the inclusions), looks like an emerald.
Colors: Green, greenish-brown, blueish-white, bluish green and orange.
Care and Treatment
Aventurine has been confused with amazonite and jade. Dark green Aventurine generally has inclusions (due to green fuchsite mica and perhaps a bit of pyrite) which creates a speckled appearance.
Aventurine, it is usually assumed to be green if a color is not associated with it.
Translucent Aventurine often fades in the sun
Aventurine has a hardness rating of 7.
Specific Gravity: 2.65 - 2.66
Star Stone Months
Though not meant to replace traditional medical treatment, Aventurine is used for physical healing.
There was a custom of assigning various Masculine and Feminine Saints with a particular gem for use in talismans. The name Andrew (patron Saint Andrew) is associated with Aventurine.