Onyx Donut BV20

Onyx raises one’s resistance and persistence, enabling one to carry even unmanageable tasks through to completion. On a mental level, it increases one’s power to keep focus, making it possible for one to take in both new material and use well all that one has mastered already. Onyx quickly enhances the retention of memory and promotes attention to detail. These traits make Onyx a instructive instrument for both pupils & teachers and is also for those whose work calls for high levels of focus, dedication and discipline.