description Color Change Sapphire Overview
A color-change sapphire is a rare variety of corundum exhibiting a distinctive optical phenomenon. The gemstone’s hue shifts between shades of blue and purple depending on the lighting conditions. This effect, known as the Alexandrite effect, results from vanadium absorption within the stone. It's particularly prized by collectors and jewelers creating unique jewelry pieces for those seeking an unusual and captivating gem.
help Color Change Sapphire FAQ
What causes the color shift in a Color Change Sapphire?
The color shift is caused by trace amounts of vanadium within the aluminum oxide corundum crystal. These impurities absorb different wavelengths of light depending on the light source illuminating the gemstone.
What colors does a typical Color Change Sapphire display?
Typically, the gemstone will appear blue in natural daylight or fluorescent lighting, and shift to a distinct purple under warm incandescent light. The strength of the visible color change heavily dictates the stone's overall value.
Are Color Change Sapphires natural or synthetic?
Color Change Sapphires exist both naturally in the earth and as lab-created synthetic stones. Natural specimens are primarily mined in Tanzania, Madagascar, and Sri Lanka.
Are Color Change Sapphires as hard as regular blue sapphires?
Yes, because they share the exact same corundum mineral base, they rank a 9 on the Mohs scale of mineral hardness. This makes them incredibly durable and highly suitable for daily wear in engagement rings.
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