GIA Celebrates Birthstones – Tanzanite, Tanzania’s Treasure

Tanzanite, December’s birthstone, is found in the shadows of the majestic Mount Kilimanjaro in Tanzania, the only commercial source for the gemstone.


GIA Celebrates Birthstones – Forget Me Not With Turquoise

Turquoise, the December birthstone, has a distinct blue or greenish-blue color because it contains copper, and is most commonly found in China and the U.S. southwestern states Arizona, New Mexico, Colorado and Nevada.


GIA Celebrates Birthstones – Topaz, the Golden Gem

Topaz, November’s birthstone, is a mineral species that naturally occurs in a range of color, including various reds, pinks, purples, yellows, oranges, browns, and more rarely, pale blue. Topaz in yellow and reddish brown are commonly heated to create more desirable pink gems.


GIA Celebrates Birthstones – The Citrus-Colored Citrine

November’s birthstone, citrine, comes in the colors of citrus fruits, ranging from deep reddish orange, reminiscent of Madeira wines, to pale and saturated yellow hues. In fact, its name is derived from the French word “citron,” which means “lemon.” Citrine’s optimistic colors bring to mind the warmth of mid-day sunshine.


GIA Celebrates Birthstones –Tourmaline, the Chameleon of Gemstones

Tourmaline, the October birthstone, comes in almost every color of the rainbow. The most popular varieties range from rich reds, pinks and peach colors, to emerald greens and yellows, to blues and violets.

Home | FAQ | Site Map | GIA 4Cs Blog | Contact a Diamond Expert | Comments & Suggestions
4Cs Education | More Diamond Information | GIA Grading & Reports | Diamond Buying Guide | About GIA
Use of this site signifies your agreement to its terms of use. © 2002 - 2016 Gemological Institute of America Inc. GIA is a nonprofit 501(c)(3) organization. All rights reserved.
World Headquarters and The Robert Mouawad Campus 5345 Armada Drive, Carlsbad, California 92008 (760) 603-4000
This page was last updated Monday 2nd of May 2016 11:11:11 PM
/* OnlineOpinion v5.9.0 Released: 11/17/2014. Compiled 11/17/2014 01:01:01 PM -0600 Branch: master 7cffc7b9a0b11594d56b71ca0cb042d9b0fc24f5 Components: Full UMD: disabled The following code is Copyright 1998-2014 Opinionlab, Inc. All rights reserved. Unauthorized use is prohibited. This product and other products of OpinionLab, Inc. are protected by U.S. Patent No. 6606581, 6421724, 6785717 B1 and other patents pending. Resource added 8/6/2015, */