在售的变石标本
在售 6 个 · US$500–US$3,000 USD
图库中有 16 个
Alexandrite is the emerald-green to red-purple color-change variety of chrysoberyl. In daylight it often shows a green or yellow-green body color with a rich, sometimes velvety luster, while artificial light may bring out pink to purplish-red reflections, making the gem a striking example of pleochroism in mineral form. Crystals are typically prismatic and can form on matrix or as single, well-formed crystals, and faceted pieces emphasize the color-change phenomenon rather than sheer size.
- 化学式
- BeAl2O4
- 稀有度
- Rare
- 稳定性
- Stable
- 收藏者关注度
- Very High Interest
- 分类说明
- Oxide mineral; Chrysoberyl group (BeAl<sub>2</sub>O<sub>4</sub>)
购买变石标本
查看全部 6 个上架
变石的产地
主要产地
- Novello矿5 个标本
- Carnaíba矿区2 个标本
- Carnaiba Mine2 个标本
- 阿富汗1 个标本
- 圣埃斯皮里图1 个标本
- 斯维尔德洛夫斯克州1 个标本
- 乌拉尔山脉1 个标本
- Masvingo District1 个标本
关于变石
Notable specimens have come from several classic localities, with important material reported from Zimbabwe, Brazil, Russia, and Afghanistan. Collectors prize Alexandrite for the historical allure of color-change behavior and the fine-crystal aesthetics that accompany well-formed faces. While color-change is the defining feature, exceptional pieces also exhibit strong luster and clean, transition-rich color shifts, making them sought-after for study and display alike.