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주제는 LLM이 아닌 키워드 규칙에 따라 분류됩니다. 건수는 선택한 매체에 따라 달라지며, 갱신까지 최대 5분이 걸릴 수 있습니다.

  1. Rock & Gem

    Precious Metal Clay: Make a Silver Sand Dollar Pendant (새 탭에서 열립니다)

    Precious metal clay makes it surprisingly easy to create your own fine silver jewelry and holiday ornaments—even if you’re not a trained silversmith. Using this versatile PMC material, you can transform a simple sand dollar into a shimmering silver pendant or decoration right at your kitchen table. With just a mold, a small butane torch,…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)
  2. Rock & Gem

    Hallelujah Junction Mine: Quartz is King (새 탭에서 열립니다)

    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…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)
  3. Rock & Gem

    Citrine Stone: Faceting Shield of the Heart Design (새 탭에서 열립니다)

    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…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)
  4. Rock & Gem

    Ametrine: The Bicolor Quartz of Amethyst and Citrine (새 탭에서 열립니다)

    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,…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)
  5. Rock & Gem

    Tick Canyon Howlite: From Waste to Gem (새 탭에서 열립니다)

    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…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)
  6. Rock & Gem

    Alien Eye Fluorite Field Guide (새 탭에서 열립니다)

    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…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)
  7. Rock & Gem

    Transylvania Minerals: Gothic Beauty (새 탭에서 열립니다)

    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…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)
  8. Rock & Gem

    Sulfur: Properties, History and Uses (새 탭에서 열립니다)

    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…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)
  9. Rock & Gem

    Cursed Gemstones: The Black Prince’s Ruby and More (새 탭에서 열립니다)

    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…

    Rock & Gem에서 기사 전문 읽기 (새 탭에서 열립니다)

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