description Color Change Spinel Overview
Color change spinel is a rare variety of the spinel gemstone that exhibits a distinct shift in its primary hue depending on the ambient light source. In natural daylight, the stone typically appears blue or grayish-blue, but it transitions to a deep purple or violet under incandescent indoor lighting. This phenomenon is caused by trace elements such as chromium or iron interacting with the crystal lattice. High-quality specimens are primarily mined in Sri Lanka, Tanzania, and Myanmar, and the gemstone appeals to collectors who seek stones with optical anomalies.
insights Ranking position
Color Change Spinel ranks #35 of 200 in the Gemstone ranking, behind Opal, ahead of Color Change Garnet.
help Color Change Spinel FAQ
What colors can color-change spinel show under different lights?
Some stones appear grayish blue or lavender in daylight and shift toward violet or purple under warm incandescent light. The exact change depends on the stone's trace elements and the spectral qualities of the light source.
How should I test a color-change spinel before buying it?
View it under daylight-equivalent illumination and a warm incandescent source, allowing your eyes to adapt between them. A phone flash or jewelry-store spotlight alone may not reveal the same change.
Is color-change spinel the same gemstone as alexandrite?
No. Spinel is a distinct mineral species, while alexandrite is a color-changing variety of chrysoberyl; a laboratory report from GIA or another recognized lab can separate them.
Where is color-change spinel found?
Documented sources include Sri Lanka, Tanzania, Madagascar, and other spinel-producing regions. Sri Lankan material is particularly associated with pastel blue, lavender, and purplish changes.
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