Turquoise Buying Guide

Found only in a few places on earth, turquoise is the second of December’s two official birthstones. Sought after for its robin’s egg blue and unique spiderweb-like patterns, it’s a perfect gem for unusual jewelry designs.


GIA Holiday Shopping Guide: How to Buy Pearls 101

Captivated by pearls? You’re certainly in good company. A favorite of legendary women including Cleopatra and Queen Elizabeth, these beautiful spheres are the only precious gems made from a living creature – the mollusk.


Tanzanite Buying Guide

Notable for its majestic blue velvet and intense royal purples, the first of December’s birthstones is named after the only country it can be found: Tanzania. Exceptional tanzanite can display three distinct colors in three crystal directions.


Rock Candy – Fantasy Cut Gemstones

There’s  magic and fantasy in gemstones, and a group of cutters are master conjurers.


The Magic of the Fantasy Cut Gemstones

Fantasy cut gemstones exhibit so many unique optical characteristics that they often appear to live up to ancient lore – that gems are imbued with magical properties.

So called fantasy cut gemstones often owe their spectacular beauty to unique faceting artistry that is achieved through cutting non-traditional design elements. These techniques cause light to reflect and refract differently, surging into view as stunning displays of light and color along the gems’ surface and interior.


Citrine Buying Guide

Perhaps the most popular and frequently purchased yellow gemstone, citrine is a variety of quartz, and a November birthstone. While it’s an attractive alternative for topaz as well as yellow sapphire, natural citrine is actually quite rare, and those without color zoning or visible inclusions are highly sought after.

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 - 2014 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 Sunday 21st of December 2014 06:47:03 AM