Colour : Orangish-Green
Shape : Cushion
Weight : 0.48 ct
Dimension : 4.57 x 4.51 x 3.34 mm
Treatment : Unheated
Clarity : VS
• GIC – Geological Institute of Colombo Certified
重量 : 0.48 卡拉
尺寸 : 4.57 x 4.51 x 3.34 mm
颜色 : 橙绿色
透明 : 好透明
形状 : 靠垫形状
清晰度 : VS
Natural Andalusite – Rare Nesosilicates Gemstone
Andalusite is an aluminium nesosilicate mineral with the chemical formula Al2SiO5. Andalusite is isomorphic with kyanite and sillimanite, being the lower pressure mid-temperature polymorph.
Andalusite is a which forms under low pressure and low to high temperatures.
The minerals kyanite and sillimanite are polymorphs of andalusite, each occurring under different temperature-pressure regimes.
Sometimes, Fibrous inclusions in andalusites may create a chatoyant effect. However,andalusite cats eye is very rare.
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