Diamant metallic thread from DMC 

72% viscose / 28% polyester / 3 strands (can be carefully separated in smaller lengths) / Made in Japan

35m per spool

Excellent sparkle, can be used not only for embroidery but for thread wrapping. Stands up well to being used - but as with all metallics, recommend using shorter lengths when stitching through fabric repeatedly to avoid excess wear as you create.