D to F color: "transparent and colorless, no other hue" G to L color: generally "nearly colorless" M to Z color: "pale yellow" began to appear, yours is IJ color, nearly colorless, not yellow. Rest assured. The color is ok, and the purity of SI is invisible to the naked eye. If you're not going to collect it, just wear it. No one will climb on your diamond ring and study it for a long time. Even if you give him a magnifying glass ten times, you may not be able to see why. If it's over 30, it's smaller. You can tell Chow Tai Fook about this color and clarity. A little bigger than 40 to 50. Let him check the goods all over the country. Maybe he can buy a bigger diamond at Chow Tai Fook 8200.