Category: jewelry watches gemstones

Question:
diamond drilling, I would like to know how the sub-levels, I heard what seemed to points A \ B \ C \ D levels, is drilling sub -呀? Or how points呀?

Answer:
4000-5000 of diamond rings, see you is to Pt inlay or 18K words of the
Pt better than some, but the gold is expected to be more money in more , so that the diamond will be smaller if you do not care about
inlaid diamond material, you can pick 18K, so that the diamond will be bigger

regardless of ABCD grade diamonds, diamond quality, good or bad based on the evaluation 4C criteria: color, clarity, cut, carat weight

color rough diamonds, then divided into 12 levels, following are the three kinds of color grading system (GIA, Europe, and China’s system) control the content of the jewelry brand is now generally sales when they are more commonly used letters in English in front of the color grading system and said that the color from top to bottom has become worse, D-color is best.
inlaid diamond color is divided into seven files on only: DE / FG / H / IJ / KL / MN /