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Bornite, affectionately known as “peacock ore,” is a stunning mineral admired for its iridescent colors. This copper iron sulfide crystallizes in the orthorhombic system and has a chemical composition of Cu5FeS4. It occurs in igneous, metamorphic, and sedimentary rocks across the world, making it a widespread and common ore of copper. The fresh surfaces of bornite range from … [Read more...] about Bornite: The Colorful Gem of Transformation and Chalcopyrite

Malachite is a stunning green mineral that has captivated humans for thousands of years. This opaque, green-banded carbonate mineral crystallizes in a monoclinic crystal system, forming beautiful botryoidal, fibrous, or stalagmitic masses deep underground. Malachite deposits are found all across the globe - from the Congo to the American Southwest. Historically, malachite has … [Read more...] about Emerald Elegance: Exploring the World of Malachite Gemstones

Citrine is a variety of quartz that is prized for its warm golden hues. Ranging in color from pale yellow to a deep orangey brown, citrine is often referred to as the "sun stone" due to its ability to retain and emanate the energy of sunlight. This sunny appearance has linked citrine to feelings of joy, energy, and prosperity throughout history, making it one of the most … [Read more...] about Radiant Sunshine: Exploring the World of Citrine Gemstones

There are a number of rocks and minerals in nature that resemble the look of glass. Obsidian, a natural volcanic glass, is perhaps the most similar with its smooth, shiny, black appearance. But there are other types of rocks and minerals that can also take on a vitreous or glass-like luster when light reflects off their surfaces. The transparency of some minerals gives them a … [Read more...] about Gems of Transparency: Rocks and Minerals That Look Like Glass

Azurite is a soft, deep-blue copper mineral that forms when copper ore deposits weather. With a chemical formula of Cu3(CO3)2(OH)2, it occurs in beautiful blue crystals in many localities around the world. When found in massive form, azurite is almost always mixed with the green copper mineral malachite. This mixture, called azurite-malachite or azurmalachite, is frequently cut … [Read more...] about Azurite: The Blue Gem of Ancient Mysteries and Modern Beauty