Tiger's Eye (egg 22 /16 mm) Griguatown(Griqualand, Transvaal) South Africa

The cost per unit.
In this case, the product is in the form of a small egg, measuring 22/16 mm, there is an error ( - ) of 1 mm, with excellent ionization throughout the stone.

The tiger's eye rock is formed due to the replacement of fine-fibrous veins of alkaline amphibole - ribekite and translucent quartz.
This optical effect (tiger's eye) in the form of an iridescent color glow, creates silky iridescence in golden and golden yellow tones.
The products have an impeccable mirror polishing.

Stones with such figurative names as "tiger's eye", "bull's eye" and "cat's eye" are a kind of quartz, which is literally saturated with fibrous material (pseudomorphosis of quartz by amphibole)

The color of the tiger's eye is caused by inclusions of iron hydroxides (goethite, limonite)
The replacement of ribekite with quartz and iron hydroxides occurs under hydrothermal conditions, therefore tiger's eye, as well as hawkeye, can be attributed to minerals of hydrothermal origin. Moreover, the substitution occurs first with iron hydroxides, and then with quartz.