Hook:

12 - 18 Tiemco 2457

Thread:

8/0 Uni-Thread White

Body:

3-4 strands of Pearl Crystal Flash twisted into a tight cord

Rib:

Fine Gold wire

Wing:

Light Elk Hair trimmed approx. 1/3 of hook shank in rear - small head in front

A swell variation of the classic Serendipity - the Crystal is a flashy addition to your nymph box.  All variations of the Serendipity work well whenever there are Caddis around, but the Crystals seem to help if things are moving a little slow.  The version in Green is a nice alternative, but I have good luck with other colors like Root Beer, Lime Green & Copper as well as Bead Head versions.