Although the rutile crystals within the quartz are best known for being a golden colour, they can vary from pale yellow to rich orange or even be reddish brown. The mineral rutile can also be black and black rutilated quartz is often confused for tourmalinated quartz.
When rutile which is made up primarily of titanium dioxide penetrates quartz the crystals are usually acicular. This shape describes a crystal which is long, slender and needle-like. The inclusions grow naturally within the quartz over millions of years and tend to resemble fine strands of hair. For this reason rutilated quartz is sometimes called Venus hair stone and the inclusions can be known as Cupid's darts.
Rutilated quartz was once known as sagenite but the name is no longer used.
The colour of rutilated quartz is caused almost entirely by the colour of the inclusions. Stones can feature just a few hair-like strands or be so full they're almost opaque.
These beautiful stones are exceptionally tactile and would make a great addition to any collection of rocks and minerals.
Although classed as a medium sized tumbled stone, exact weights and sizes do vary slightly from piece to piece.