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3 天前 · SIO Crystal 希奧水晶是台灣目前首屈一指的能量引導品牌，挑選天然金曜石的首飾、擺件、禮品等都非常推薦！ 超人性化的客服也提供款式挑選、水晶配戴建議、靈性服務、盧恩符文的護身符挑選等 ...
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2 天前 · Amethyst Description. This amethyst crystal is from Namibia. It shows classic quartz crystal shape: a six-sided columnar crystal with a pyramid-shaped termination at the top. Courtesy Daniel Trinchillo, Fine Minerals International. Amethyst is the purple variety of the quartz mineral species. It’s the gem that’s most commonly associated ...
3 天前 · Liquid crystals articles from across Nature Portfolio. Liquid crystals are substances that flow like a liquid but maintain some of the ordered structure of crystals. Liquid-crystal molecules...
5 天前 · Most of the salt on Earth is dissolved in water, which breaks down the crystal structure. When sea water is slowly dried in salt pans, or salt crystals form under the earth from ancient lakes or oceans, salt crystals form. The spectacular halite crystal, also known as rock salt, Credit: Wikimedia/Robert M. Lavinsky.
2 天前 · Mineral. Crystals of serandite, natrolite, analcime, and aegirine from Mont Saint-Hilaire, Quebec, Canada. In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.
3 天前 · Scientists describe this as a “twinned crystal.”. Large gems cut from good-color twinned crystals are typically shallow, and should be judged on their overall beauty rather than on proportions alone. The fashioned spinel is from Sri Lanka, while the rough crystals are from Myanmar. The second crystal from the right is an octahedron.
