Vivianite Crystals For Sale

Vivianite is a striking mineral, known for its vibrant deep blue to greenish-blue hues that intensify when exposed to light over time. Often translucent to transparent, it has a mesmerizing, almost otherworldly quality that makes it stand out in any mineral collection. The crystalline structure of vivianite can resemble that of popular depictions of kryptonite, with its vivid color and unique crystal formations giving it a similar “powerful” aesthetic. However, vivianite’s softness and tendency to darken upon exposure make it a delicate yet enchanting mineral, prized by collectors and gem enthusiasts alike. Formed in iron-rich, phosphate-bearing environments, vivianite often appears as prismatic or blade-like crystals, adding to its mystique and resemblance to the famous fictional mineral.

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Gemmy, Blue-Green Vivianite Crystals - Brazil #208686

6.5" Gemmy, Blue-Green Vivianite Crystals - Brazil

$895

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Vivianite is a hydrated iron phosphate mineral, with the chemical formula Fe₃(PO₄)₂·8H₂O. It typically forms in iron-rich, phosphate-bearing environments where it crystallizes as iron combines with phosphates and water. Vivianite crystals can vary in color depending on their exposure to light and air; initially, they may appear colorless to light green, but as they oxidize, they take on deeper blue and green hues. This color transformation is a key characteristic of vivianite and can produce dramatic, almost ethereal colors in natural specimens.

It is relatively soft, with a hardness of about 1.5 to 2 on the Mohs scale. This softness, combined with its tendency to darken upon exposure to light, makes vivianite a delicate mineral to handle and store. It often forms in elongated prismatic crystals but can also appear in radiating, fibrous, or massive forms. This mineral is typically translucent to transparent, adding to its allure as it refracts light through its richly colored structure.

Vivianite is usually found in environments rich in organic matter, such as peat bogs, sedimentary deposits, and areas with decaying vegetation or animal remains. These conditions provide the phosphate necessary for vivianite’s formation. It’s often discovered in association with other minerals like siderite and pyrite, as well as in fossil beds, where it can grow on bones or other organic remains. The mineral’s unique formation process, combined with its reaction to oxygen and light, gives it its remarkable appearance.

In terms of geological occurrence, vivianite is found worldwide, with notable deposits in Bolivia, Germany, the United States, England, and Russia. In some cases, large, well-formed vivianite crystals have been discovered, while in other deposits, it appears as smaller, fibrous masses. Bolivia, in particular, is famous for its high-quality vivianite specimens, which exhibit some of the deepest and most vibrant colors seen in this mineral.

Color and Crystal Structure

Vivianite is renowned for its captivating colors, which can range from light blue to a deep, nearly black blue-green. The mineral’s color depends on its level of oxidation; as vivianite oxidizes, its iron component changes, resulting in increasingly darker shades. This color transformation adds an element of mystery and changeability, as vivianite crystals can appear drastically different depending on their exposure to light and air.

In crystal form, vivianite typically appears as prismatic or bladed structures. Some specimens can display complex and beautiful crystal formations, with radiating clusters or fibrous textures that enhance the mineral's visual appeal. While it may look like the fictional “kryptonite” in its vivid green and blue colors, vivianite’s structure is softer and more fragile, with a tendency to darken with time.

Uses and Significance

While vivianite doesn’t have significant industrial applications due to its softness and reactivity, it holds an esteemed place in the world of mineral collecting. Its unique appearance, color-changing properties, and rarity make it highly desirable for collectors. Some museums and private collectors have amassed spectacular vivianite specimens, especially those that showcase its vibrant colors and pristine crystal formations.

In some cases, vivianite has also been used in scientific research, particularly in studies examining the formation of phosphates in sedimentary environments. Because it often forms in the presence of organic materials, vivianite can help researchers understand geochemical processes in ancient sediments and peat bogs.

Care and Preservation of Vivianite

Vivianite’s delicate nature requires careful handling and storage. Exposure to light can cause the mineral to darken, which may be desirable or undesirable depending on the collector’s preferences. To maintain its color, it’s recommended to store vivianite in low-light environments and to handle it as little as possible. Some collectors may choose to keep vivianite specimens in sealed, light-resistant containers to preserve their original appearance.

Because of its softness, vivianite can also be susceptible to scratching or other damage. It’s best to handle it with gloves and to avoid placing it in areas where it might come into contact with harder minerals or surfaces. Proper storage and gentle handling are essential for ensuring that vivianite specimens retain their beauty and value over time.

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Gemmy, Emerald-Green Vivianite Crystal Cluster - Brazil #218184

VIVIANITE CRYSTALS FOR SALE

More About Vivianite

Color and Crystal Structure

Uses and Significance

Care and Preservation of Vivianite

Featured Photos