Black Tigers Eye Crystals Extra Large
These black tigers eye tumbled stones are classed as grade B because they have only been lightly tumbled. Therefore, they have a slightly more rugged or natural appearance.
The colour of black tigers eye is produced by heating the brown and yellow variety of tigers eye. Heat changes the mineral's chemical composition, initiating a change in colour.
Heat treatments are widely used to enhance or change the colour of rocks and minerals. This practice, which has been used for thousands of years, was first documented by the Ancient Greek philosopher Theophrastus.
No two of these tigers eye stones are the same, and the few pieces we have left available all have interesting and/or unusual markings.
Although classed as extra-large, size can vary from piece to piece. We also have medium-sizrf black tigers eye crystals as part of our collection.
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