Black Tigers Eye Tumbled Stones from South Africa
The colour of black tigers eye is produced by heating the brown and yellow coloured stone. Heat changes the chemical composition hence initiates a change in colour.
Heat treatments are widely used to enhance or change the colour of rocks and minerals. It's a practice that has been going on for thousands of years and was first documented by ancient Greek philosopher Theophrastus.
Unlike the red variety of tigers eye which is also heated, the black stone retains its chatoyant properties.
Chatoyance is an optical phenomenon that can be seen in some minerals. It's caused as light reflects off the fibrous structure, inclusions or cavities within the stone.
When a chatoyant stone reflects light, a narrow band of reflected light can be seen. In tigers eye with gentle movement colour and markings can look as if they're moving. The quality of this optical phenomenon can vary from one stone to the next.
These fine grade black tigers eye tumbled stones are wonderfully tactile. No two pieces are the same. Although classed as a medium sized stone weights and sizes do vary from piece to piece. We also have black tigers eye tumbled stones in extra large sizes.
Empathic warriors are stones which are not quite as perfect as we would like them to be. These are available to buy at a significantly reduced price. More information about broken or damaged crystals can be found in our article on empathic warriors.
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