Gemological Institute Of America | All About Gemstones - GIA
WEBEstablished in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.
GIA - Report Check
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Natural Diamonds | Diamond Stone – GIA C
WEBAbout Diamond. Diamond forms under high temperature and pressure conditions that exist only about 100 miles beneath the earth’s surface. Diamond’s carbon atoms are bonded in essentially the same way in all directions. Another mineral, graphite, also contains only carbon, but its formation process and crystal structure are very different.
GIA Gem Encyclopedia | Complete List Of Gemstones
WEBGIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research. Green in sunlight. Red in lamplight. Color-changing alexandrite is nature’s magic trick.
Birthstones | Birthstone by Month - GIA
WEBAquamarine and bloodstone are the two birthstones for March. One evokes blue skies and calming waters while the other represents health and strength. Learn more about these two March birthstones and where they can be found. Those born in the month of April are lucky enough to call the diamond, a scintillating stone, their birthstone.
GIA - Report Check
WEBGIA reports represent the highest standard of reliability, consistency and integrity. And now, GIA Report Check is available for all GIA reports, providing you with an additional level of assurance. With Report Check, you can quickly and conveniently confirm that the information on your report matches what is archived in the GIA report database.
My GIA
WEBMy Laboratory & GIA Laboratory Client Portal. Now featuring one log in for My Laboratory and the GIA Client Portal. Maintain your laboratory account information and grading results online. You can manage your team members and provide access to My Laboratory, update payment preferences, view open balances and create shipping memos.Also, view and …
Sapphire Quality Factors | Different Types & Colors of Sapphire - GIA
WEBIn general, the more intense and uniform the color is, the more valuable the stone. Sapphires that are not blue are known as fancy sapphires, and may be any color—except red (which is a ruby). The fancy sapphire colors are: pink, orange, yellow, green, purple, and violet. There truly is a different color of sapphire to suit anyone’s taste!
Alexandrite Gemstone | Natural Alexandrite Stone - GIA
WEBAbout Alexandrite. Often described by gem aficionados as “emerald by day, ruby by night,” alexandrite is the very rare color-change variety of the mineral chrysoberyl. Originally discovered in Russia’s Ural Mountains in the 1830s, it’s now found in Sri Lanka, East Africa, and Brazil, but fine material is exceptionally rare and valuable.
Sapphire Gemstone | Sapphire Stone - GIA
WEBAbout Sapphire. Besides blue sapphire and ruby, the corundum family also includes so-called “fancy sapphires.”. They come in violet, green, yellow, orange, pink, purple, and intermediate hues. Some stones exhibit the phenomenon known as color change, most often going from blue in daylight or fluorescent lighting to purple under incandescent ...