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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

amethyst stone
Amethyst Buying Guide

Known for its majestic purple color, amethyst is the gemstone of choice for those born in February. (more…)

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© 2002 – 2024 Gemological Institute of America Inc. GIA is a nonprofit 501(c)(3) organization.
All rights reserved.

Use of this site signifies your agreement to its terms of use.
© 2002 – 2024 Gemological Institute of America Inc.
GIA is a nonprofit 501(c)(3) organization.
All rights reserved.