A diamond with noticeable inclusions at 10X magnification would most likely receive which clarity grade?

A diamond with noticeable inclusions at 10X magnification aligns with the clarity characteristics described for the SI (Slightly Included) grades, specifically SI1 or SI2. In this range, inclusions are visible under magnification and can often affect the overall appearance of the diamond.

The SI clarity grades indicate that while the inclusions may not be visible to the naked eye in all cases, they are indeed noticeable when examined closely, thus impacting the clarity assessment. This level of clarity suggests that the inclusions are more pronounced and can detract from the diamond's visual appeal when viewed under 10X magnification, justifying a clarity rating in the SI range.

Other clarity grades such as VVS (Very Very Slightly Included) and VS (Very Slightly Included) typically have inclusions that are minute and not easily seen at 10X magnification, making them less suitable choices for a diamond with noticeable inclusions. The I (Included) grades would describe a diamond with even more pronounced and potentially detrimental inclusions, which might be visible to the naked eye. Therefore, SI is the most applicable clarity grade for a diamond exhibiting noticeable inclusions under magnification.