Diamond grade clarity

Diamonds' clarity grades are divided according to the size, quantity, type, location, and obvious degree of surface defects. They can be divided into six grades: FL, IF, VVS, VS, SI, and I. Among them, FL-level diamonds have the best clarity, and diamonds of this clarity level cannot see any defects under ten times magnifying glass.

Diamond clarity rating

Diamond clarity refers to the degree of visual cleanliness, which is one of the diamond 4C standards. The factors that affect the clarity of the diamond include two factors: content and surface defects. Among them, content refers to internal defects, and surface defects refer to surface defects.

Diamonds can be divided into six grades: FL, IF, VVS, VS, SI, and I according to the size, quantity, type, location, and obvious degree of the contents and surface defects. Among them, FL grade has the best diamond clarity.

FL-ranked diamonds can hardly see any surface defects or inclusions when viewed under a 10x magnifying glass, while I-ranked diamonds with the worst clarity grade have contents or surface defects visible to the naked eye.