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https://4cs.gia.edu/en-us/blog/gia-diamond-grading-scales/
Mar 14, 2013 · GIA Diamond Grading Scales: The Universal Measure of Quality March 14, 2013 The prospect of purchasing a diamond may seem daunting, but through GIA, an unbiased authority on diamonds, you have several handy resources to help you select the highest quality diamond.
https://4cs.gia.edu/en-us/diamond-clarity/
This short video explains the GIA clarity scale and how GIA classifies diamonds with a clarity grade ranging from Flawless to I 3 by using a 10X magnification loupe and a microscope to see and plot the diamond’s inclusions.. Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond …
https://www.lumeradiamonds.com/diamond-education/diamond-color
The GIA grades diamonds on a scale of D (colorless) through Z (light color). All D-Z diamonds are considered white, even though they contain varying degrees of color. True fancy colored diamonds (such as yellows, pinks, and blues) are graded on a separate color scale. Below is the GIA diamond …
https://www.zalesoutlet.com/diamond-clarity
The GIA Diamond Clarity Grade scale has five main categories of clarity characteristics with 11 grades in all. The term FL or flawless is used for diamonds in which a qualified observer, under favorable lighting conditions, cannot find internal characteristics and/or faults by thorough examination with a 10X loupe.
https://www.gia.edu/gia-about
Sep 12, 2021 · Established in 1931, GIA is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry. Welcome to GIA. Students around the globe turn to GIA for the knowledge ...
https://www.zalesoutlet.com/diamond-color
Using this scale, the diamond on the lower end of the scale (D) will have the least amount of color – it is considered a colorless stone. The diamond at the higher end of the scale (Z) has deeper tones. However, when a diamond's color is more intense than the "Z" grading, it enters the realm of a "Fancy Color" diamond.
https://www.bluenile.com/education/diamonds/color
The GIA diamond color grades range from D (colorless) to Z (light yellow or brown). Many people ask why the GIA diamond grading scale starts at D. Arcane systems used grades of A-C, 1-3, and I-III, etc. The GIA set out to standardize these diverse systems and started their scale fresh with a grade of D. L-Z.
https://www.jewelry-secrets.com/Blog/the-durability-and-hardness-of-metals/
Sep 12, 2010 · The Moh’s Scale of Hardness. The Moh’s Scale of Hardness ranks minerals, materials, metals and Gemstones on a scale of 1-10. 10 being the best and the most durable…. Diamond is a 10. Gold and Silver on the other hand are only a 2.5 – 3 on the Moh’s Scale. They are fairly easy to work with (Jewelers love it) because they are so malleable.
https://www.whiteflash.com/diamond-education/holloway-cut-advisor-hca-tool/
The Holloway Cut Adviser (HCA) is an easy-to-use tool that analyzes a small set of data about a round diamond and renders a score to help the user estimate cut quality. Developed and patented by Garry Holloway in 2001, the HCA tool has been used by thousands of diamond shoppers to sift through vast numbers of diamond listings in order to identify candidates worth considering for purchase.
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