Monthly Archives October 2011

Rutilated Quartz

Rutilated quartz is quartz crystal that have the mineral inclusions of rutile inside them. Collectively, the type of quartz with needle-like inclusions like rutile, asbestos, goethite, epidote, or hornblende in them are called sagenite. Rutile is just one of the many types of inclusions that are found in quartz, but it is common enough to be seen in many a specimen in crystal shops. On its own, rutile (TiO2) is mineral that crystallizes as elongated, prismatic crystals that are often striated. It is a very common mineral and therefore, often gets embedded in quartz. Normally, rutile occurs in quartz as
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Ruby – The noble stone

The ruby gemstone is famous as one of the most valued gemstones in the world. Weight for weight, flawless rubies can be even more expensive than diamonds, and they belong in the Big Four (diamond, sapphire, ruby, emerald) precious gemstone group. Rubies are a type of corundum mineral (Al2O3) which is extremely hard; scoring 9 on the Mohs scale, it is just a step below the diamond. The color of ruby ranges from pink to vermillion-red; basically any shade of red there is. There are some spectacular rubies that display dichroism (double types of hue) and asterism (a 6 pointed
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