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  1. Rock & Gem

    Hallelujah Junction Mine: Quartz is King (wird in einem neuen Tab geöffnet)

    Hallelujah Junction Mine is a place where quartz is king. Located on Petersen Mountain, the mine is known for abundant pockets of smoky quartz, amethyst and citrine, often found as large crystal scepters. For rockhounds, the opportunity to dig for these exceptional specimens is a sought-after experience. Situated on Petersen Mountain, along the border of…

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  2. Rock & Gem

    Citrine Quartz Field Guide (wird in einem neuen Tab geöffnet)

    Citrine quartz is a yellow to orange variety of quartz (SiO2). It ranks a 7 on the Mohs hardness scale. True natural citrine ranges in color from pale lemon to deep golden honey, with transparency from translucent to transparent and a vitreous luster. Crystals often form in prismatic shapes with six-sided symmetry. Key Takeaways Citrine…

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  3. Rock & Gem

    Citrine Stone: Faceting Shield of the Heart Design (wird in einem neuen Tab geöffnet)

    Faceting citrine stone using the Shield of the Heart design is one of the exercises in Twelve Easy Gemstone Faceting Designs, A Guide for the Beginner Gemcutter. Written as a learning tool for beginner faceters, the book introduces twelve designs that progressively develop gemstone-cutting skills. The Shield of the Heart is the eighth design, helping…

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  4. Rock & Gem

    Ametrine: The Bicolor Quartz of Amethyst and Citrine (wird in einem neuen Tab geöffnet)

    Ametrine is a rare bicolor variety of quartz that naturally combines the violet color of amethyst with the yellow-to-orange color of citrine in a single crystal. Most gem-quality ametrine comes from a remote deposit in Bolivia, where changes during crystal growth produced its distinctive color zoning. When ametrine first appeared on the modern gem market,…

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  5. Rock & Gem

    Can Gemstone Rings Get Wet? Things You Need To Know (wird in einem neuen Tab geöffnet)

    Gemstone rings can get wet, but not all of them are water-friendly! Some stones can handle a little water, while others need more care. Before washing your hands or jumping into the shower, it’s good to know what your ring can handle. It really depends on the type of gemstone, the metal, the finish, and…

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  6. Rock & Gem

    Tick Canyon Howlite: From Waste to Gem (wird in einem neuen Tab geöffnet)

    Howlite was first discovered in Nova Scotia in 1868 by Henry How, who originally named the mineral silicoboro-calcite. How’s discovery inspired the name howlite. Since then, Tick Canyon in Los Angeles County, northwest of Pasadena, has become a well-known source of this distinctive white mineral, often marked with black or brown veins. The Accidental Discovery of…

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  7. Rock & Gem

    Alien Eye Fluorite Field Guide (wird in einem neuen Tab geöffnet)

    Alien eye fluorite is a rare variety of fluorite from Namibia known for its distinctive green colored, diamond-shaped centers surrounded by dark outer zones. These contrasting bands resemble alien eyes, giving the mineral its unusual name and making it a sought-after specimen among mineral collectors. Under ultraviolet (UV) light, alien eye fluorite can also fluoresce…

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  8. Rock & Gem

    Transylvania Minerals: Gothic Beauty (wird in einem neuen Tab geöffnet)

    Transylvania minerals offer rockhounds a fascinating mix of rare gold tellurides, vivid red realgar, pink rhodochrosite and colorful fluorite. Located in the heart of Romania, Transylvania is known for its Carpathian Mountains, volcanic geology and Dracula legends. Its historic mining districts have also produced notable mineral specimens that helped shape the region’s place in mineralogical…

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  9. Rock & Gem

    Sulfur: Properties, History and Uses (wird in einem neuen Tab geöffnet)

    If elements were rated by their popular image, sulfur wouldn’t have a chance. Just the mention of the word conjures unsettling thoughts of noxious volcanic gases, acrid smoke, odors of decaying organic matter and even the fundamentalist Christian “fire-and-brimstone” concept. But, image problems aside, sulfur has a lot going for it. Widely collected for its…

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  10. Rock & Gem

    Cursed Gemstones: The Black Prince’s Ruby and More (wird in einem neuen Tab geöffnet)

    Cursed gemstones have long been linked to royal deaths, broken romances, and unexplained misfortune. From the Black Prince’s Ruby to the Hope Diamond, these infamous cursed gemstones have inspired stories of tragedy and bad luck while continuing to captivate collectors and gem enthusiasts. The Black Prince and Pedro the Cruel Deposed Spanish king, Don Pedro…

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