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4.95 Carat Natural Loose Hauyne Pair Cushion Shape Gemstone

About the Item

Loose Hauyne / Hauynite Pair Weight: 4.95 Carats Dimension: 9 x 7.7 x 5.5 Mm 8.9 x 7.8 x 5.6 Mm Sizes: 2.50 And 2.45 Carat Origin: Badakhshan Afghanistan Shape: Cushion Color: Blue Family: Sodalite Treatment: Non Certificate: On Demand . . Hauyne is a rare and striking mineral that belongs to the sodalite group of minerals, known for its vivid blue color, often rivaling that of sapphire. It is a silicate mineral containing sulfur, calcium, aluminum, and sodium, with traces of potassium. Hauyne's vibrant blue coloration comes from the presence of sulfur in its structure, though it can also occur in green, yellow, white, or even colorless forms, depending on trace elements and impurities. First discovered in the early 19th century, Hauyne is named after the French mineralogist René Just Haüy, who made significant contributions to crystallography. This mineral forms primarily in volcanic environments, particularly in volcanic ejecta and basalts. It is often associated with other minerals such as leucite, nepheline, and feldspar, and can be found in regions with significant volcanic activity, such as Italy's Mount Vesuvius or the Eifel region in Germany. Hauyne crystals are generally small, occurring as well-formed, transparent to translucent isometric crystals. Its hardness on the Mohs scale ranges between 5.5 and 6, making it relatively soft for use in jewelry, although faceted stones are occasionally cut for collectors. However, its scarcity and fragility make it more of a collector's item than a practical gemstone. The mineral is also notable for its strong fluorescence under ultraviolet light, which can enhance its already brilliant appearance. Hauyne's rarity, combined with its rich color and gem-like quality, has made it highly sought after by collectors and mineral enthusiasts alike. Despite its delicate nature, Hauyne’s aesthetic appeal makes it a captivating specimen in any mineral collection. Its rarity and geological significance continue to fascinate both geologists and gemstone lovers around the world.

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