Nice big glassy areas with large pockets of well formed crystalline portions that include the red material within the structure. I buy a pound of Trinitite in bulk and maybe see a piece or two that stand out with this type of ruddy color. This has iron staining it red. Definitely much rarer than the run of the mill specimens. Dont miss the chance to add that red colored Trinitite to your collection today! 
Great under magnification.
Trinity Site, White Sands, New Mexico.
3.853 grams.