Rutile is the more common inclusion in quartz crystals in many deposit. Between the numerous varieties can be also the more sough after and the more expensive inclusion. Most of the Rutilated Quartz varieties comes from Brazil, from the states of Minas Gerais and Bahia.
"Normal" rutilated Quartz is a golden hairy variety with the Rutile fibers desordered inside the quartz. When the Rutile needles are oriented in parallel grow, a beautiful cat's eye variety can be cut. The beauty and the value of rutilated quartz depends on the quantity of the inclusions and on its color. Grey rutile is less appreciated that the golden variety, but some actractive specimens can be produced, especially when is associated with Brookite crystals. More rare is the red Rutile and the best value can be reached for thick red Rutile crystals.
The variety called Sagenite is formed when a pattern of crossed Rutile crystals is present with angles of 60 degres that is the twinning law of Rutile. An old material of brazilian Sagenite was famous for its green color.
An infinity of different shape of aggregation of the Rutile needles can produce some varieties with short life, that can be produced just from a pocket or from a single quartz vein. This can be the case of the "Comet Quartz" where the Rutile fibers are attached to a small particle inside the Quartz that look as a meteorite and the Rutile is oriented in just ine direction as the tail of the comet. Few stones of this variety have been produced and probably just few miners know the exact location of the pocket. The same occurred for other kind of star shaped aggregation of rutile fibers. The best of wich is surely the "Sunflower Quartz" where the rutile balls was really in the shape of a flower.
The king of Rutile inclusion will probably remain the Star Rutile (see) from Novo Horizonte, Bahia, where the star has six rays at the twinning angle and is epitactic above an Hematite blade crystal.