Quality grading of gemstones

You can write here...Quality grading of gemstones, according to some aspects, it can be classified as diamonds, colored gemstones, jade three categories separately from cubic zircon gemstones supplier. Today we can have a clear view at the quality grading of gemstones together.

Currently grading principles and methods, quality grading diamonds more perfect, and colored gemstones, jade quality grading standards, whether at home or abroad, has not been as widespread as the diamond 4C standard recognized uniform standard. Quality diamond grading, widely used internationally 4C grading standard, weight, color, clarity, cut even for the hot sale synthetic gemstones. China has developed a "diamond grading" the national standard, using the 4C standards on principle. But beware of the 4C standard; people's understanding and grasp of different periods have different tendencies that are the focus of the 4C will be different. Initially it was stressed that weight, the larger the diamond considered most valuable.

Later I found that not all of the big diamond quality is good, so the color development to pursue high-level, with the highest clarity, crystal thorough, dazzling, more precious and more glamorous in market of colored zircon gemstones wholesale.