The color changing property of alexandrite is known as alexandrite effect and is a result of chromium traces found in the gemstone.
Color change sapphire alexandrite.
Natural sapphires can also show a color change effect but it is usually less pronounced.
Alexandrite is a very rare and valuable variety of chrysoberyl that shows color change.
Alexandrite is a color change variety chrysoberyl and is considered one of the rarest gemstones in the world.
This means that the stronger the percentage of the color change the more expensive the sapphire.
Most color change sapphires change from blue to purple.
Finding green to red is extremely rare in sapphire whereas that is the norm for alexandrite.
Large sizes with strong color change can be especially valuable and demand very high prices.
Several other well known gemstones including diaspore sapphire garnet and spinel may also change color as a function of the light source but the color change of top alexandrites is.
Although these gems are uncommon and valuable in their own right they are sometimes marketed misleadingly as alexandrites.
A lot of alexandrite heirloom jewelry uses this corundum that often contains vanadium to produce the color change.
However not all color change chrysoberyls have the classic range of colors that alexandrites show.
The standard for color change sapphires.
Some color change sapphires will have only a slight visual change while others have incredible 100 change of color.
Therefore this sapphire replica is more like an alexandrite simulant.
The most famous of these is the rare and expensive alexandrite a variety of chrysoberyl.
According to gia alexandrite s finest dual colors are a vivid grass green in daylight and fluorescent light and an intense raspberry red in incandescent light.
Color change gemstones display different colors according to changes in lighting.
However color change garnets and color change sapphires have appeared on the market and show equally dramatic color changes.
Color change corundum was grown around 100 years ago the first time and used since then as an alexandrite simulant.
The chromium traces cause strong light absorption in the yellow and blue parts of the spectrum.
Most gemstones described as synthetic alexandrite are actually synthetic corundum laced with vanadium to produce the color change this alexandrite like sapphire material has been around for almost 100 years.
That s because alexandrite is a variety of the chrysoberyl mineral and is not a sapphire which is a completely different mineral.
Generally this refers to a laboratory grown sapphire that has been manufactured with trace elements that give it a color change effect similar to natural alexandrite.
Many modern sources frequently use emerald by day ruby by night to romanticize alexandrite s color.
Synthetic color change sapphires may look like alexandrite stones but in terms of their structure they are nothing alike.