YAG
YAG
YAG is the abbreviation for yttrium aluminum garnet. It was first grown in the 1950’s using the flux grown method. It is most often grown by the Czochralski method today. Its primary application was in optic and laser technology. It was used as a diamond simulant until 1973 when synthetic cubic zirconia came on the market. New varieties of YAG were developed and produced exciting new colors that could simulate tsavorite and aquamarine.
General Information
Tolerance:(+0.010/-0.010)
LWUV: Variable
YAG Colors
-
Blue -
Blue -
Colorless -
Green -
Pink -
Purple -
Red -
Yellow
YAG Spectra
Color due to neodymium. The spectrum here is dominated by the two groups of lines in the yellow and green areas which is typical of this rare earth element. The strongest line in the yellow at 588nm. and in the green at 531nm. Other lines can be seen in the red, orange and blue areas. in deeper colored stones the close groups of lines may merge to form a broad absorption band
Color due to rare earth element, possibly erbium. Strong sharp absorption lines of various widths in the red, green, blue and violet areas depict a typical rare earth spectrum
Color due to rare earth element, possibly erbium. Strong sharp absorption lines of various widths in the red, green, blue and violet areas depict a typical rare earth spectrum. A closer grouping of the three lines in the deep blue centered at 450nm. Can be seen.
Color due to rare earth element, possibly erbium. Strong sharp absorption lines of various widths in the red, green, blue and violet areas depict a typical rare earth spectrum.
We acknowledge the significant scientific contributions of John S Harris, FGA to the study of gemstone spectra and with deep appreciation to him, acknowledges the use of his images and related notes about gemstones and their spectra in the educational materials on this website.
Alternate Names
Yttrium Aluminum Garnet, Alexite, Amatite, Circolite, Dia-Bud, Diamite, Diamogem, Diamonair, Diamone, Diamonite, Diamondite, Diamonte, Di'yag, Geminair, Gemonair, Kimberly, Linde Simulated Diamond, Nier-Gem, Regalair, Replique, Somerset, Triamond, YAIG, Yttrium Garnet
Countries of Origin
Russian Federation; Unknown; China
Care
Normal care