alexandrite
Noun
Meaning
a green variety of chrysoberyl used as a gemstone
Source: WordNetSynonyms
Antonyms
Hypernyms
Examples
Although the color change in pulled stones can be from blue to red, the color change does not truly resemble that of natural alexandrite from any deposit.
Alexandrite The alexandrite variety displays a color change (alexandrite effect) dependent upon the nature of ambient lighting.
However, the latter term is a misnomer: synthetic color-change sapphires are, technically, not synthetic alexandrites but rather alexandrite simulants.
Fine-quality alexandrite has a green to bluish-green color in daylight (relatively blue illumination of high color temperature ), changing to a red to purplish-red color in incandescent light (relatively yellow illumination).
Hydrothermal lab-grown alexandrite has identical physical and chemical properties to real alexandrite. citation Some gemstones falsely described as lab-grown synthetic alexandrite are actually corundum laced with trace elements (e.
Czochralski or pulled alexandrite is easier to identify because it is very clean and contains curved striations visible under magnification.