Heavily included is the norm gia gemstone clarity types. Type 2 colored gemstones by their nature have natural inclusions. Sapphire and ruby garnet all species and colors iolite all peridot all quartz amethyst citrine ametrine spinel all tourmaline blue orange yellow multi colored except watermelon color zircon green orange red yellow. Green to greenish blue slightly included moderate to medium color change. The gemstone clarity scale was created specifically for grading diamonds more specifically white diamonds not colored gemstones for colored gemstones it is difficult to use a one size fits all classification system for clarity since some colored gemstones are expected to have inclusions and are sometimes even identified by their inclusions.
Description industry standards agta codes. Andalusite all chrysoberyl alexandrite corundum all colors i e. Type 3 colored gemstones by their nature have many natural inclusions. Colored gemstone clarity scale. This chart should not be regarded as final and official.
For every person the quality of color is depended on his or her personal senses making color grading a very subjective matter that would be very hard to communicate with the lack of a general system to compare and describe colors. Type 2 gemstones. Light green to greenish blue included weak to low color change. While there is a strict scale to grade diamonds on that was devised by the gemological institute of america gia there is not an international standard for grading clarity in colored gems. Using the chart to better describe the color spectral gems can help with the grading and pricing process.
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Type 1 gemstones are gemstones that are normally found to be clean. Deeper green to bluish green clean bright to high color change. Type 2 clarity. One is the colorgrid from spectral gems of birmingham mich a one page laminated color chart that sells for 25. Many people often confuse and misuse the four c s.A chart of gem varieties organized by color red blue green pink yellow gold bronze orange violet purple white colorless and multicolor. Be the first to know about our exclusive offers and news contact us. Depending on the nature of the stone the assigned clarity grade is based on what is considered to be normal with regard to inclusions. Although the chart doesn t provide color grading information it s a helpful color communication tool nonetheless. A chart of gem varieties organized by color red blue green pink yellow gold bronze orange violet purple white colorless and multicolor.
Although the chart doesn t provide color grading information it s a helpful color communication tool nonetheless. Type 1 gemstones are gemstones that are normally found to be clean. For every person the quality of color is depended on his or her personal senses making color grading a very subjective matter that would be very hard to communicate with the lack of a general system to compare and describe colors. Description industry standards agta codes. Heavily included is the norm gia gemstone clarity types.
