Large Black Rutile Faceted Gemstone
This black rutile gemstone is heavily included with needle-like crystals of the mineral rutile.
Although the quartz is colourless and transparent, the dense network of inclusions partially obscures its clarity, making the gemstone appear almost black.
In one small section where few rutile crystals are present, the quartz is transparent.
Black rutile, also known as rutilated quartz, forms over millions of years, as rutile crystals gradually grow within the quartz.
Despite the dense network of crystals, a considerable amount of light still manages to pass through the stone.
This gemstone has been faceted which enhances the way that it interacts with light.
