The second most abundant mineral in the Earth's crust, Quartz is often praised for its clarity and the many colors it can form as. These variations (Amethyst, Citrine, Rose Quartz, etc.) form due to impurities in the Quartz crystal when Iron, Manganese, and other ions are present while the crystal is forming. The pure form of Quartz is white or clear, depending on the conditions of the crystals environment during formation- trapped gas and liquid in the crystal can keep the Quartz from appearing clear and instead have a white appearance.

Considered one of the most attractive blue minerals found in nature, the intense shades of blue, color-zoning, and well-formed large crystals make it a highly desirable minerals for collectors and for jewelry. Kyanite is very anisotropic, meaning it has a different hardness depending on the angle. Its vertical hardness ranges from 4.5 to 5.5, while the horizontal hardness is from 6 to 7 on the Mohs scale. This characteristic of the mineral led to it being commonly called “disthene”, meaning two strengths.

Kyanite is named from the Greek term cyanos, meaning deep blue.

5.75 x 5.25 x 5.75 inches

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