Corelli New Crystal Violin Set 700MB Forte Ball End, Full Set The innovation lies in the discovery of a very new nylon which avoids the usual reproaches. Improvements have made the quality and volume of sound larger and richer but also elegant and classical, the easy playing due to the improved response and projection. The soul of New Crystal strings is the result of close cooperation with the supplier, guided by centuries of experience in the manufacturing of strings. It has been specially designed for optimized strings for violin and viola. This high quality nylon delivers clear sound with body, projection and precise harmonics.