Large Natural Ruby Crystal
This unique specimen is one of the world’s largest known rough ruby gemstones. This unique single natural ruby crystal weighs 8.2 lbs. or 18,696 carats. The ruby is semi-translucent to opaque and contains rutile, which may create a six-ray star if cut en cabochon. The crystal displays a strong red fluorescence when exposed to long-wave ultraviolet light. It measures 122.4mm x 112.3mm x 133.9mm.
The ruby is identified in GIA Report 15171991 dated May 24, 2006.
If carved, this Ruby Crystal gemstone would be the largest ruby carving in the world. If shaped en cabochon, it would be the largest shaped and polished ruby gemstone in the world.
This giant rough ruby is a unique opportunity for a serious collector or investor. For more information, please feel welcome to 1-410-849-2101 or by email.
The ruby belongs to the corundum group of minerals. Its name is derived from the red color (LatinRubeus). Red corundum is always called by the name ruby, while other colors of corundum are known as sapphire. Rubies can be opaque, translucent, or transparent. The ruby coloring pigment is chrome plus some iron. The red color and tone vary with individual deposits, so it is not possible to identify the source area. Ruby is the second-hardest mineral after diamond and seven times harder than topaz. The hardness varies in direction and has no cleavage but does have certain preferred directions of parting. Care must be taken when cutting and setting a ruby. Inclusions in a ruby are common. Rutile needles produce a soft sheen known as silk. Or if cut en cabochon, the effect is six-rayed star (asterism) produced by the reflection of a light source.