Pearl Grade Worksheet Length of Strand Millimeter size (mm)   Description   Grade     Color White/Rose Pink/Rose White/None Light Cream/Rose White/Green Medium Cream/Rose Pink Green Medium Cream/None or Green Dark Cream/Rose Dark Cream/None or Green Yellow/Green or Rose Yellow/None 1 2 3 4 5 6 7 8 9 10 x .10 = Shape All Round Mostly Round Slightly Off Round Off Round Semi-Baroque 1 2 3 4 5 6 7 8 9 10 x .15 = Lustre Very High High Medium Low Very Low 1 2 3 4 5 6 7 8 9 10 x .25 = Nacre Very Thick Thick Medium Thin Very Thin 1 2 3 4 5 6 7 8 9 10 x .25 = Blemishes Unblemished Very Slightly Blemished Slightly Blemished Blemished Very Blemished 1 2 3 4 5 6 7 8 9 10 x .20 = Matching Excellent Very Good Good Fair Poor 1 2 3 4 5 6 7 8 9 10 x .05 =   Final Grade Adjustments Adjusted Final Grade     Open sheet in new window

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