GIA
GIA is the abbreviation for the Gemological Institute of America. It was established in 1931 by Robert M. Shipley (a 1929 Gem-A graduate).
GIA DIAMOND DOSSIER
For smaller diamonds, an abbreviated form of the GIA Grading Report is often used, called a GIA Dossier.
GIA Under Siege
By Jeff Miller
Wrapping up a four-month-long internal investigation in October 2005, the Gemological Institute of America (GIA) concluded it must do more to safeguard its grading process.
GIA Diamond Grading Report®: Commonly referred to as a diamond certificate, the GIA's official name for this lab assessment is a Diamond Grading Report. For those loose diamonds that weight .
GIA Sample Certificate
Who Issues Certificates?
There are many diamond labs that issue certificates, ...
GIA Museum Director Elise Misiorowski pointed out, "Opalized fossils are very rare, and this exhibit provides both an intriguing glimpse into the prehistoric era of the dinosaurs, and a clearer picture of how this fascinating gem material formed.
GIA and AGS are both the tops in the industry when it comes to grading Diamonds and giving accurate Diamond information, so I would highly recommend buying one or the other.
GIA:
The Gemological Institute of America is recognized as one of the world's top authorities on grading diamonds.
See also: Grading report, grading certificate
Custom Jewelry ...
The GIA has strengthened its acknowledgment of the CIBJO nomenclature at the South African Congress in May 1980.
All loose diamonds are certified by major laboratory "GIA".
Are YOU in a Hurry ? Then Search YOUR Favorite Diamond from below below Diamond Dropdown & Celebrate YOUR Love this Season...
Select shape Round Princess Emerald Oval Marquise ...
Sample Diamond Grading Report
(often called a "certificate")
from the Gemological Institute of America (GIA)
Return to Certificates Page ...
GIA Certificate
A GIA (Gemological Institute of America) report provides detailed information about the dimensions, carat weight, shape and cut of a stone.
GIA
The Gemological Institute of America (GIA) is one of the most well respected institutions for gemological research and learning.
GIA - History
In the 1950s, the GIA developed the first internationally accepted Diamond Grading System. This system provides unbiased opinions on the quality of polished diamonds by applying uniform criteria to their grading.
GIA Report Number: Unique GIA identification number.
Laser Inscription Registry: At the request of the customer, the diamond is micro laser inscribed with its unique GIA Report Number.
GIA Color Range
Diamonds with a color grade of D, E or F are considered colorless.
Diamonds graded G, H, I and J are near colorless.
GIA Gem Lab (Gemological Institute of America)
This is considered the premiere diamond grading laboratory in the world. Most people that have shopped for a diamond will usually be familiar with this lab.
GIA: The Gemological Institute of America, which most experts consider the established authority on gemology. Among many other things, the GIA offers in-home study courses that cover an extensive range of subjects.
GIA Credentials
Andre' Hut, one of the owners of Gem Hut is also a holder of a GIA Diamonds Certificate, and is currently working towards the Graduate Gemologist certificate.
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GIA
GIA stands for the Gemological Institute of America.
GIMMEL RING ...
GIA
GIA stands for the Gemological Institute of America.
GIMMEL RING ...
GIA-GTL
Gemological Institute of America Gem Trade Laboratory. Well respected independent laboratory which grades diamonds and includes a diamond grading report with each diamond. GIA is the creator of the 4C's.
Girdle ...
GIA, Gemological Institute of America: A non profit teaching institute considered the standard bearer in the grading of diamond and colored gemstones.
GIA, G.I.A. The Gemological Institute of America. Styles itself as the world's leading authority on diamonds and other gemstones. Market leader for diamond and gem certificates by virtue of its location and size.
GIA Color Description/Grading System
One well done, and widely used, system for color description is that developed and taught by GIA (Gemological Institute of America).
GIA origin of color See origin of color.
GIA report Technically this is a GTL (Gem Trade Laboratory) report but the GIA report term is more commonly used. This report is for the purpose of gem and diamond authentication and identification.
GIA
Gemological Institute of America
The most recognized gemological credential in the Unites States. Offers a wonderful array of services along with on-line teaching and a lot of assistance with study by sending out specimens for grading, etc...
GIA Inscription:
Since the invention of the laser, GIA graded diamonds may have the grading report number laser-inscribed on the stone's girdle. This number matches the GIA grading report.
Gemstone: ...
Neither GIA nor AGS recognize the SI3 clarity grade. Dutton's Diamonds adheres to the established GIA clarity grading scale and does not sell diamonds with the SI3 clarity grade. ...
GIA Diamond Grading Video
The Structure of a Diamond
Proportion refers to the angles and relative measurements of a polished diamond. More than any other feature, proportions determine a diamond's optical properties.
GIA Acquires Dr. Eduard Gübelin Collection
Pala’s Bill Larson Recalls His Own Work with the Collection ...
GIA is considered the world's most trusted name in diamond grading and gemstone identification.
GIA Bangkok: Effects of Heating and Copper Diffusion in Feldspar
April 02, 09
GIA Bangkok: Distinguishing Heated from Unheated Natural Spinels and from Heated Spinels ...
GIA's alphabet grade has a universal appeal. The scale begins with the highest rating of D for colorless, and travels down the alphabet to grade diamonds with traces of very faint yellowish or brownish hue.
GIA - (Gemological Institute of America) A nonprofit, endowed, educational institute maintained for the benefit of industry and the public. Many educational courses are offered for advancement and knowledge within and about the trade.
GIA proportionoscope
An optical comparator used by GIA for checking proportions of brilliant cut diamonds from .18 carats to 8 carats.
Girdle ...
GIA (Gemological Institute of America): A nonprofit, endowed, educational Institution controlled by by jewelers and maintained for the benefit of the industry and the public.
GIA and DCLA have Excellent as their top grade, HRD has Very Good for its top grade whilst AGS splits its top grade category into Ideal and Excellent.
GIA Inscription:
GIA graded diamonds may have the grading report number laser-inscribed on the stone's girdle. The inscription is extremely small and generally only visible when viewed under magnification.
GIA Diamond Dictionary
Gemological Glossary for non-gemologists
*Note: Clicking on these external links will open a window to a third part site that is not REEDs.com.
1. GIA GTL - Gemological Institute of America Gem Trade Laboratory.
2. AGTA GTC - American Gem Trade Association Gem Testing Center
3. EGL USA - European Gemological Laboratory ...
The GIA grades diamonds on a scale from D (Colorless) to Z (Light Yellow). When a diamond is graded darker than Z on the GIA scale it is referred to as "fancy yellow", and the more color and intensity it shows, the more valuable it will be.
The GIA (Gemological Institute of America) classifies Zultanite as a Type II transparent gemstone, ...
The GIA recognises grades the intensity of fancy coloured diamonds from 'Faint' to 'Fancy Vivid', using the following scale: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Dark, Fancy Deep and Fancy Vivid.
GIA
Gemological Institute of America. This organization is considered to be the authority on gemological teaching and research.
View the GIA scale
Beware
when looking for a diamond’s color use daylight from the North or tube light corrected “daylight'.
There are eleven clarity grades in the GIA system ranging from Flawless (Fl) to Imperfect 3 (I3).
In a very small percentage of diamonds in the SI range some characteristics may be visible to the unaided eye.
^ a b c d e f g h i j k Gemological Institute of America, GIA Gem Reference Guide 1995, ISBN 0-87311-019-6
^ Yarnell, Amanda (2004). "The Many Facets of Man-Made Diamonds".
We are in the enviable position of being first in line in the channel of distribution and our GIA qualified gemologists hand pick out the very best for sale in our private collection which is world renowned for the quality of the Tanzanite we sell.
S are accompanied with a GIA report, as a matter of course. The HPHT treatment is permanent, impossible to detect with a loupe and requires professional laboratories to verify.
It is only recently that both the Gemological Institute of America (GIA) and the American Gem Society (AGS) diamond grading labs began evaluating cut grade on certificates.
In fact, GIA codified and adopted the traditional grading system that can be traced at least as far back as the fourth century BC.
This is an important consideration for those of you who see GIA graded diamonds. GIA certifications are used frequently and are highly respected by gemologists and appraisers.
GIA along with the mineralogists from other respected institutions like Harvard, the British Museum and Heidelberg University, identified the new gem as a variety of the mineral zoisite.
To insure the best results specify that you receive a certificate from one of the following, (GIA, EGL, HRD, IGI). The first three will identify the grade of the diamond but do not address value. Generally, these three are used for loose stones.
America (GIA)
Gemological Institute of America (GIA) was established as a non-profit organization in 1931 by Roger Shipley.
Gemological Institute of America (GIA): Founded in 1931 by Roger Shipley, this non-profit organization upholds the highest standards for grading diamonds and other precious gems.
Beverly Hills Diamonds: GIA Certified Loose Diamonds at wholesale prices
Find incomparable selection of loose Diamonds, Hearts and Arrows, best quality guaranteed, GIA Certified.
In fact, gemological laboratories such as the Gemological Institute of America (GIA) and American Gemological Society (AGS) will only grade diamonds that are unmounted.
If you´re trying to reach the area inside a bail, you can use the old string method we were taught at the GIA. Tie about a 1´ long piece of string to your bench pin (or anything else handy!). Moisten slightly with lighterfluid.
 See also: Jewel, Diamond, Stone, Color, Jewelry
  
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