Which characteristic is NOT associated with rutilated quartz?

Study for the GIA Colored Stones Test. Enhance your knowledge with flashcards, multiple choice questions, and detailed explanations for every answer. Prepare to excel in your exam!

Rutilated quartz is specifically known for its distinctive needle-like inclusions of rutile, which is a mineral comprised of titanium dioxide. The inclusion of rutile creates a unique visual effect that many collectors and gem enthusiasts value. The presence of these inclusions enhances the aesthetic appeal of the quartz, creating a striking appearance in the stone.

In terms of transparency, rutilated quartz can vary; however, it is predominantly characterized by being transparent to translucent, depending on the density and arrangement of the rutile inclusions. The clear portions of rutilated quartz allow for a beautiful interplay of light and color, making it an attractive option for jewelry and decoration.

Sagenitic quartz is a specific type of rutilated quartz where the rutile inclusions exhibit a more defined, feather-like pattern. Thus, this classification further emphasizes the relationship between rutilated quartz and its unique inclusions.

The incorrect option refers to "opaque color with inclusions." Rutilated quartz is not typically categorized as opaque; it is known for being transparent or translucent, and its value comes in part from its clarity and the ability to see through to the inclusions. Therefore, the characteristic mentioned as opaque color with inclusions does not accurately reflect the nature of r

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