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Matching refers to all formerly discussed factors: size, color, fashion, sheen, nacre and surface quality. Matching applies to couple of pearls and strand of pearls. AAA+ and AAA grade pearls are excellent to very agreeable matching. AA+ and AA grade pearls are very agreeable to good matching. A+ and A grade pearls are good matching.
How to put entire the jewelry grade factors together: A Pearls grade and worth depends aboard how it combines the complete merge of these 7 value factors. Since 2 strands of pearls in accurate same size maybe quite assorted in additional factors such as assorted color, alter surface quality,[link widoczny dla zalogowanych],[link widoczny dla zalogowanych],[link widoczny dla zalogowanych], so pearls are graded based on entire other 6 factors. Additionally,[link widoczny dla zalogowanych], no each of the element weights the same. According apt Gemworld International's jewelry Guide,[link widoczny dla zalogowanych], the emulating ratios apply to the six factors besides size: Color = 10% Shape = 15% Luster 25% Nacre = 25% Surface quality = 20% Matching = 5%. Total 100%