Quartz from South Africa - image 1
Quartz from South Africa - image 2

Quartz from South Africa

Help improve this record

No owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.

Sign in to contribute
An example of what many refer to as Tiger's Eye, this a thick vein of fibrous riebeckite now replaced by quartz. The specimen comes with a previous label from the collection of Ray DeMark. This weighs 105.67 g.Tiger's Eye is a popular ornamental gemstone traditionally forms through the pseudomorphic replacement of fibrous riebeckite by quartz, with major deposits located in South Africa. As the original fibrous framework is preserved and impregnated by silica, subsequent oxidation of the trapped iron content creates the characteristic golden-brown colors and silky, shimmering effect known as chatoyancy.

Product details

SpeciesQuartzRiebeckite
SizeSmall Cabinet
Dimensions7.0 x 3.2 x 2.8 cm
Added on09/29/2026
LocalitySouth Africa

Current owner

Unknown Owner
Acquired
Nov 2026

Previous owners

DateCollectorAcquisition price
—Weinrich MineralsNot disclosed

Learn more

Quartz
Mineral guide
Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.
Quartz
Regional guide
Quartz from South Africa
Contribute
Locality guide
South Africa
A collector's guide to South Africa: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders.