不可不知的五種天然變色寶石
亞歷山大石、變色螢石、變色水鋁石、變色剛玉與變色石榴石
Introduction to natural color-changing stones: alexandrite, fluorite, diaspore, corundum and garnet.
一魚兩吃不奇怪? 一石兩色人人愛❤
黃光 白光 紅變綠? 變色寶石看不厭✨
川劇變臉不稀奇，寶石變色更珍稀！由於亞歷山大變石的關係，各種變色寶石在台灣市場已備受注意。
凡黃光與白光下顏色落差明顯達兩色相以上時，就可稱為變色寶石，且變色現象對比越明顯則品質越好。
除了眾所周知的金綠寶石品種(亞歷山大石)以外，變色螢石、變色水鋁石、變色藍寶石和變色石榴石等都是很受歡迎的品種。
變色螢石以藍-紫變色極為明顯著稱，雖硬度較低但也是藏家的最愛；變色水鋁石算後起之秀，變色效果一般弱至中等，變色強的極為強手；變色剛玉變色效果一般弱至中等，因屬剛玉名門，明顯變色者價值不低；變色石榴石的變色種類與效應強弱變化極大，價格落差也大，值得一提的是其變色可能如亞歷山大石一般；變色寶石的王者當然屬亞歷山大石，但收藏以變色效應明顯為佳，變色不明確，即使有證書也未必是市場主流。
要當個聰明的消費者，千萬別只是買一張證書而不看寶石的好壞喔！
Color-changing stones are becoming popular in Taiwan market. When a stone shows different hue(2 grade in hue chart) under fluorescent Light or incandescent light, it is called a color-changing stone. Except for alexandrite, fluorite, diaspore, sapphire and garnet all have color-changing variety. Fluorite is famous for significant color change; diaspore usually appears weal to moderate color change; sapphire with significant color change is valuable; garnet has a wide range of color change and may change color as is alexandrite. Though alexandrite is the king for color change gemstone, the degree of color change is key to its value. Even if a alexandrite is certified, weak color change may be a fatal flaw for consumers.
