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Crystal Encyclopedia

Lazulite

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Lazulite is a rare mineral that belongs to the phosphate class, characterized by its striking blue color. Its name is derived from the Persian word “lazhward,” which refers to a blue color. Lazulite typically occurs in crystalline form, with a distinct prismatic or tabular crystal habit. It has a Mohs hardness of around 5.5 to […]

Orbicular Jasper

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Orbicular jasper is a variety of jasper, a type of chalcedony, known for its distinctive orb-like patterns. These patterns can vary in size, color, and arrangement, creating unique and visually striking stones. Orbicular jasper often displays concentric circles, spherical shapes, or irregular spots resembling orbs, hence the name “orbicular.” The base color of orbicular jasper […]

Eye Agate

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Eye agate is a unique variety of agate, a form of chalcedony, known for its distinctive patterns resembling eyes. These eye-like formations, often called “agate eyes,” are concentric circles or bands that form within the stone, creating mesmerizing and intricate designs. Agates, including eye agate, are formed within volcanic or metamorphic rocks through a process […]

Bi-color Tourmaline

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Bi-color tourmaline is a unique variety of the tourmaline family that exhibits two or more distinct colors within a single crystal. These colors can range from pink and green to blue and yellow, and the transition between colors can be either gradual or sharp. The coloration in bi-color tourmaline is due to variations in the […]

Arizona Rainbow Petrified Wood

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Petrified wood is essentially fossilized wood where all the organic materials have been replaced with minerals, usually silicates such as quartz, while retaining the original structure of the wood. This process occurs over millions of years through a combination of pressure, heat, and mineral-rich water. The result is a stunning display of colors and patterns, […]

Watermelon Tourmaline

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Watermelon tourmaline is a strikingly beautiful variety of the mineral tourmaline, renowned for its distinctive color gradient that resembles a slice of watermelon. This gemstone is highly prized for its unique appearance, which combines vibrant pink, green, and sometimes white hues in a single crystal. Contents Formation and Composition Mineralogical Properties: Color Zoning Sources of […]

Wollastonite

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Wollastonite Wollastonite Wollastonite is a group of innosilicate mineral, formula is CaSiO3 that may inlude small amount of magnesium, manganese and iron substituting for calcium. A valuable industrial mineral, wollastonite is white, gray, or pale green in color. It occurs as rare, tabular crystals or massive, coarse-bladed, foliated, or fibrous masses. Its crystals are usually […]