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alexandrite    
n. 紫翠玉

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  • Alexandrite Gemstone | Natural Alexandrite Stone - GIA
    Color-changing alexandrite is nature’s magic trick Often described by gem aficionados as “emerald by day, ruby by night,” alexandrite is the very rare color-change variety of the mineral chrysoberyl
  • What Is Alexandrite? Rarity, Price How to Buy - Brilliant Earth
    What Is Alexandrite? Alexandrite is a rare variety of chrysoberyl known for its remarkable ability to change color under different lighting conditions Its rarity and unique optical properties have made it one of the world’s most valuable colored gemstones
  • Alexandrite Stone: Meaning, History, Properties, and Value
    Alexandrite is a rare chrysoberyl gem and June birthstone known for its strong red-to-green color-change Learn about alexandrite’s price factors, history, meaning, and uses in this detailed guide
  • Chrysoberyl - Wikipedia
    Alexandrite, a strongly pleochroic (trichroic) gem, will exhibit emerald green, red and orange-yellow colors depending on viewing direction in partially polarised light However, its most distinctive property is that it also changes color in artificial (tungsten halogen) light compared to daylight
  • Alexandrite Gemstones - Brilliant Earth
    Alexandrite is often associated with transformation, balance, and good fortune because of its dramatic color change It is also recognized as an alternative birthstone for June and is prized for its rarity and uniqueness
  • Alexandrite Value, Price, and Jewelry Information - Gem Society
    Discover the rare and mesmerizing alexandrite gemstone: its properties, value factors, origins, and other facts about this June birthstone
  • Alexandrite Gemstone Buyer and Jewelry Collector Guide
    The Alexandrite Guide is intended for anyone who is interested in the history, sources, valuation and collection of alexandrite gemstones Topics also include chemical and physical properties, mythology, and color change phenomena as well as alexandrite synthetics and imitations
  • Alexandrite Meanings and Crystal Properties
    Alexandrite is an aluminum beryllium oxide and a variety of the mineral Chrysoberyl It crystallizes in the form of hexagonal-twinning crystals, small prismatic shards, and tiny gemmy inclusions within a larger matrix
  • Alexandrite History and Lore - GIA
    Abundant alexandrite deposits were first discovered in 1830 in Russia’s Ural Mountains Those first alexandrites were of very fine quality and displayed vivid hues and dramatic color change The gem was named after the young Alexander II, heir apparent to the throne
  • Alexandrite Gemstone Information Buying Guide - GemSelect
    Alexandrite is a type of chrysoberyl mineral and has a hardness of 8 5 on the Mohs scale, making it a durable gemstone suitable for everyday wear It has excellent clarity and can exhibit a range of colors, including green, red, purple, and brownish-yellow





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