Tag: Rhinestone Sizes

Measuring Crystals and Pearls – PP, SS, MM Made Simple

Swarovski and others crystals, rhinestones and flatbacks use PP, SS and MM, what do they mean and why! PP means Pearl Plate and was originally used to measure, well Pearls. That’s because the pearls were graded through stacks of plates with varying size holes. Actually we still use these in our first sort on sizes…